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Habeas Corpus Litigation in United States District Courts: An Empirical Study, 2000-2006 (ICPSR 21200)

Released/updated on: 2013-12-20
Geographic coverage: United States
Time period: 2000-01-01--2006-01-01

The purpose of the Habeas Corpus Litigation in United States District Courts: An Empirical Study, 2007 is to provide empirical information about habeas corpus cases filed by state prisoners in United States District Courts under the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA). The writ of habeas corpus is a remedy regulated by statute and available in federal court to persons "in custody in violation of the Constitution..." When a federal court grants a writ of habeas corpus, it orders the state court to release the prisoner, or to repeat the trial, sentencing, or other proceeding that led to the prisoner's custody. Each year, state prisoners file between 16,000 and 18,000 cases seeking habeas corpus relief. The study was the first to collect empirical information about this litigation, a decade after AEDPA was passed. It sought to shed light upon an otherwise unexplored area of habeas corpus law by looking at samples of capital and non-capital cases and describing the court processing and general demographic information of these cases in detail.

AEDPA changed habeas law by:

  • Establishing a 1-year statute of limitation for filing a federal habeas petition, which begins when appeal of the state judgment is complete, and is tolled during "properly filed" state post-conviction proceedings;

  • Authorizing federal judges to deny on the merits any claim that a petitioner failed to exhaust in state court;

  • Prohibiting a federal court from holding an evidentiary hearing when the petitioner failed to develop the facts in state court, except in limited circumstances;

  • Barring successive petitions, except in limited circumstances; and

  • Mandating a new standard of review for evaluating state court determinations of fact and applications of constitutional law.

The information found within this study is for policymakers who design or assess changes in habeas law, for litigants and courts who address the scope and meaning of the habeas statutes, and for researchers who seek information concerning the processing of habeas petitions in federal courts. Descriptive findings are provided detailing petitioner demographics, state proceedings, representation of petitioner in federal court, petitions, type of proceeding challenged, claims raised, intermediate orders, litigation steps, processing time, non-merits dispositions and merits disposition for both capital and non-capital cases which lead into the comparative and explanatory findings that provide information on current and past habeas litigation and how it has been effected by the Antiterrorism and Effective Death Penalty Act of 1996.

Curated

Impact of Prisoner Litigation Reform, 1992-2000 [United States] (ICPSR 20354)

Released/updated on: 2008-04-10
Geographic coverage: United States
Time period: 1992-04-01--2000-12-01

In 1996, the United States Congress enacted two policies to regulate the use of the legal system by state prisoners. They were the Prisoner Litigation Reform Act (PLRA) and the Antiterrorism and Effective Death Penalty Act (AEDPA). The purpose of this research project was to examine whether the PLRA and the AEDPA had their intended effects of reducing the number of Section 1983 lawsuits and habeas corpus petitions, respectively, at both the national and circuit court levels. The researchers obtained data, from the Research and Statistics Division of the Administrative Office of the United States Courts, on the number of civil rights suits and the number of habeas corpus petitions filed by state prisoners in district courts from April 1992 to December 2000. These data were organized into monthly increments. Dataset 1, Civil Rights Suits Filed, contains 105 cases, and Dataset 2, Habeas Corpus Petitions Filed, also contains 105 cases. The trends in civil rights suits filed (Dataset 1) and habeas corpus petitions filed (Dataset 2) were measured by the number of petitions filed per 10,000 state prisoners. Filing rates were measured at the level of district courts, grouped together by the circuit court that has jurisdiction over them.

Variables in Dataset 1, Civil Rights Suits Filed, include filing date and the number of civil rights suits filed per 10,000 state prisoners at the national level as well as for district courts within each of the 11 circuits and the District of Columbia. An intervention flag variable is also included. Variables in Dataset 2, Habeas Corpus Petitions Filed, include filing date and the number of habeas corpus petitions filed per 10,000 state prisoners at the national level, as well as for district courts within each of the 11 circuits and the District of Columbia. A pulse flag variable and two intervention flag variables are also included.

Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 1993-1998 (ICPSR 6559)

Released/updated on: 2014-06-27
Geographic coverage: United States
This collection contains appellate information from the 12 circuit courts of appeals of the United States. The United States Sentencing Commission compiled from the Clerk of the Court of each court of appeals the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions (although technically civil matters), because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant. The 1993 data file (Part 1) includes all appeals cases received by the United States Sentencing Commission as of December 22, 1993, that had disposition dates between March 9, 1990, and September 30, 1993 (inclusive). The 1994 file (Part 2) includes all appeals cases received as of December 23, 1994, that had disposition dates between October 1, 1993, and September 30, 1994 (inclusive). The 1995 data file (Part 6) includes all appeals cases received as of December 26, 1995, that had disposition dates between October 1, 1994, and September 30, 1995 (inclusive). The 1996 data file (Part 7) includes all appeals cases received as of December 27, 1996, that had disposition dates between October 1, 1995, and September 30, 1996 (inclusive). The 1997 data file (Part 8) includes all appeals cases received as of December 27, 1997, that had disposition dates between October 1, 1996, and September 30, 1997 (inclusive). The 1998 data file (Part 9) includes all appeals cases received as of December 27, 1997, that had disposition dates between October 1, 1997, and September 30, 1998 (inclusive).
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 1999 (ICPSR 3105)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 1998-10-01--1999-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. The United States Sentencing Commission compiled from the Clerk of the Court of each court of appeals the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions (although technically civil matters), because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant. The 1999 data includes all appeals cases received as of December 27, 1999, that had disposition dates between October 1, 1998, and September 30, 1999 (inclusive).
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2000 (ICPSR 3493)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 1999-10-01--2000-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. The United States Sentencing Commission compiled from the Clerk of the Court of each court of appeals the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2001 (ICPSR 3494)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2000-10-01--2001-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. The United States Sentencing Commission compiled from the Clerk of the Court of each court of appeals the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2002 (ICPSR 4108)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2001-10-01--2002-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2003 (ICPSR 4632)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2002-10-01--2003-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2004 (ICPSR 4629)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2003-10-01--2004-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2005 (ICPSR 4627)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2004-10-01--2005-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each "case" comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2006 (ICPSR 20101)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2005-10-01--2006-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2007 (ICPSR 22624)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2006-10-01--2007-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2008 (ICPSR 25425)

Released/updated on: 2014-06-27
Geographic coverage: United States
Time period: 2007-10-01--2008-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2009 (ICPSR 28601)

Released/updated on: 2014-09-24
Geographic coverage: United States
Time period: 2008-10-01--2009-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2010 (ICPSR 35337)

Released/updated on: 2014-09-24
Geographic coverage: United States
Time period: 2009-10-01--2010-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2011 (ICPSR 35340)

Released/updated on: 2014-11-25
Geographic coverage: United States
Time period: 2010-10-01--2011-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2012 (ICPSR 35343)

Released/updated on: 2014-12-03
Geographic coverage: United States
Time period: 2011-10-01--2012-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2013 (ICPSR 35346)

Released/updated on: 2014-12-03
Geographic coverage: United States
Time period: 2012-10-01--2013-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2014 (ICPSR 36569)

Released/updated on: 2016-11-22
Geographic coverage: United States
Time period: 2013-10-01--2014-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2015 (ICPSR 36572)

Released/updated on: 2016-12-07
Geographic coverage: United States
Time period: 2014-10-01--2015-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2016 (ICPSR 36978)

Released/updated on: 2018-07-19
Geographic coverage: United States
Time period: 2015-10-01--2016-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2017 (ICPSR 38025)

Released/updated on: 2022-03-29
Geographic coverage: United States
Time period: 2016-10-01--2017-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2018 (ICPSR 38030)

Released/updated on: 2022-03-29
Geographic coverage: United States
Time period: 2017-10-01--2018-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2019 (ICPSR 38053)

Released/updated on: 2022-03-29
Geographic coverage: United States
Time period: 2018-10-01--2019-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2020 (ICPSR 38550)

Released/updated on: 2023-03-28
Geographic coverage: United States
Time period: 2019-10-01--2020-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated
Simple Crosstabs

Monitoring of Federal Criminal Convictions and Sentences: Appeals Data, 2021 (ICPSR 38553)

Released/updated on: 2023-03-28
Geographic coverage: United States
Time period: 2020-10-01--2021-09-30
This collection contains appellate information from the 12 circuit courts of appeals of the United States. From the Clerk of the Court of each court of appeals, the United States Sentencing Commission compiled the final opinions and orders, both published and unpublished, in all criminal appeals for the time period surveyed. The Commission also collected habeas corpus decisions even though they are technically civil matters, because such cases often involve sentencing issues. Both the "case" and the "defendant" are used in this collection as units of analysis. Each case comprises individual records representing all codefendants participating in a consolidated appeal. Each defendant's record comprises the sentencing-related issues corresponding to that particular defendant.
Curated

Processing and Outcome of Death Penalty Appeals After Furman v. Georgia, 1973-1995: [United States] (ICPSR 3468)

Released/updated on: 2006-03-30
Geographic coverage: United States
Time period: 1973-01-01--1995-01-01
This data collection effort was undertaken to analyze the outcomes of capital appeals in the United States between 1973 and 1995 and as a means of assessing the reliability of death penalty verdicts (also referred to herein as "capital judgments" or "death penalty judgments") imposed under modern death-sentencing procedures. Those procedures have been adopted since the decision in Furman v. Georgia in 1972. The United States Supreme Court's ruling in that case invalidated all then-existing death penalty laws, determining that the death penalty was applied in an "arbitrary and capricious" manner and violated Eighth Amendment protections against cruel and unusual punishment. Data provided in this collection include state characteristics and the outcomes of review of death verdicts by state and year at the state direct appeal, state post-conviction, federal habeas corpus, and all three stages of review (Part 1). Data were compiled from published and unpublished official and archived sources. Also provided in this collection are state and county characteristics and the outcome of review of death verdicts by county, state, and year at the state direct appeal, state post-conviction, federal habeas corpus, and all three stages of review (Part 2). After designing a systematic method for identifying official court decisions in capital appeals and state and federal post-conviction proceedings (no official or unofficial lists of those decisions existed prior to this study), the authors created three databases original to this study using information reported in those decisions. The first of the three original databases assembled as part of this project was the Direct Appeal Database (DADB) (Part 3). This database contains information on the timing and outcome of decisions on state direct appeals of capital verdicts imposed in all years during the 1973-1995 study period in which the relevant state had a valid post-Furman capital statute. The appeals in this database include all those that were identified as having been finally decided during the 1973 to 1995 period (sometimes called "the study period"). The second original database, State Post-Conviction Database (SPCDB) (Part 4), contains a list of capital verdicts that were imposed during the years between 1973 and 2000 when the relevant state had a valid post-Furman capital statute and that were finally reversed on state post-conviction review between 1973 and April 2000. The third original database, Habeas Corpus Database (HCDB) (Part 5), contains information on all decisions of initial (non-successive) capital federal habeas corpus cases between 1973 and 1995 that finally reviewed capital verdicts imposed during the years 1973 to 1995 when the relevant state had a valid post-Furman capital statute. Part 1 variables include state and state population, population density, death sentence year, year the state enacted a valid post-Furman capital statute, total homicides, number of African-Americans in the state population, number of white and African-American homicide victims, number of prison inmates, number of FBI Index Crimes, number of civil, criminal, and felony court cases awaiting decision, number of death verdicts, number of Black defendants sentenced to death, rate of white victims of homicides for which defendants were sentenced to death per 100 white homicide victims, percentage of death row inmates sentenced to death for offenses against at least one white victim, number of death verdicts reviewed, awaiting review, and granted relief at all three states of review, number of welfare recipients and welfare expenditures, direct expenditures on the court system, party-adjusted judicial ideology index, political pressure index, and several other created variables. Part 2 provides this same state-level information and also provides similar variables at the county level. Court expenditure and welfare data are not provided in Part 2, however. Part 3 provides data on each capital direct appeal decision, including state, FIPS state and county code for trial court county, year of death verdict, year of decision, whether the verdict was affirmed or reversed, and year of first fully valid post-Furman statute. The date and citation for rehearing in the state system and on certiorari to the United States Supreme Court are provided in some cases. For reversals in Part 4 information was collected about state of death verdict, FIPS state and county code for trial court county, year of death verdict, date of relief, basis for reversal, stage of trial and aspect of verdict (guilty of aggravated capital murder, death sentence) affected by reversal, outcome on retrial, and citation. Part 5 variables include state, FIPS state and county codes for trial court county, year of death verdict, defendant's history of alcohol or drug abuse, whether the defendant was intoxicated at the time of the crime, whether the defense attorney was from in-state, whether the defendant was connected to the community where the crime occurred, whether the victim had a high standing in the community, sex of the victim, whether the defendant had a prior record, whether a state evidentiary hearing was held, number of claims for final federal decision, whether a majority of the judges voting to reverse were appointed by Republican presidents, aggravating and mitigating circumstances, whether habeas corpus relief was granted, what claims for habeas corpus relief were presented, and the outcome on each claim that was presented. Part 5 also includes citations to the direct appeal decision, the state post-conviction decision (last state decision on merits), the judicial decision at the pre-penultimate federal stage, the decision at the penultimate federal stage, and the final federal decision.