Description & Citation--Study No. 25422

Bibliographic Description

ICPSR Study No.:25422
 
Persistent URL: http://dx.doi.org/10.3886/ICPSR25422
 
Title:Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 2008
 
Alternate Title:MTF 2008 (8th/10th Grade)
 
Principal Investigator(s):Lloyd D. Johnston, University of Michigan. Institute for Social Research. Survey Research Center
 
  Jerald G. Bachman, University of Michigan. Institute for Social Research. Survey Research Center
 
  Patrick M. O'Malley, University of Michigan. Institute for Social Research. Survey Research Center
 
  John E. Schulenberg, University of Michigan. Institute for Social Research. Survey Research Center
 
Series:Monitoring the Future (MTF) Series
 
Funding Agency:United States Department of Health and Human Services. National Institutes of Health. National Institute on Drug Abuse
 
Grant Number:DA-01411
 
Bibliographic Citation:Johnston, Lloyd D., Jerald G. Bachman, Patrick M. O'Malley, and John E. Schulenberg. Monitoring the Future: A Continuing Study of American Youth (8th- and 10th-Grade Surveys), 2008 [Computer file]. ICPSR25422-v2. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2009-11-23. doi:10.3886/ICPSR25422
 

Scope of Study

Summary:These surveys of 8th- and 10th-grade students are part of a series that explores changes in important values, behaviors, and lifestyle orientations of contemporary American youth. Students in each grade are randomly assigned to complete one of four questionnaires, each with a different subset of topical questions but containing a set of "core" questions on demographics and drug use. There are more than 450 variables across the questionnaires. Drugs covered by this survey include amphetamines (stimulants), barbiturates (tranquilizers), other prescription drugs, over-the-counter medications, tobacco, smokeless tobacco, alcohol, inhalants, steroids, marijuana, hashish, LSD, hallucinogens, cocaine, crack, ecstasy, methamphetamine, and injectable drugs such as heroin.
 
Subject Term(s):alcohol, attitudes, behavior, crime, demographic characteristics, drug education, drug use, educational pursuits, family, gender roles, high school students, lifestyles, prescription medications, religious attitudes, self esteem, social change, tobacco use, values, youths
 
Geographic Coverage:United States
 
Time Period:2008
 
Date(s) of Collection:2008, Spring
 
Unit of Observation:individual
 
Universe:Enrolled 8th- and 10th-grade students in the contiguous United States.
 
Data Type:survey data
 
Data Collection Notes:This study was conducted by the Survey Research Center, Institute for Social Research at the University of Michigan.
 
  In 2005, two of the questionnaire forms had a new version of the race question. It included Hispanic as one of the categories in addition to Black and White. For 2008, all four forms had this new version for the race variable.
 
  To protect the anonymity of respondents, all variables that could be used to identify individuals have been collapsed or recoded in the public use files. These modifications should not affect analytic uses of the public use files.
 
  Variables omitted from the Western region questionnaires are noted in each codebook.
 
  A user guide is provided with the study documentation. It contains two year-to-year cross-time question indices (link) for the MTF 8th- and 10th-grade surveys. The first is sorted by subject area and the second is sorted by question location.
 
  Frequency and percentage distributions displayed in the 2008 codebooks are unweighted, rather than weighted by variable V5 as they had been in previous years. This change was made to simplify both the production of the codebooks and their interpretation by the analyst.
 

Methodology

Sample:A multistage area probability sample design was used involving three selection stages: (1) geographic areas or primary sampling units (PSUs), (2) schools (or linked groups of schools) within PSUs, and (3) students within sampled schools. Of the 72 PSUs, 8 were selected with certainty, 10 were selected with a probability of .50, and the remainder were selected using a probability based on their 2000 Census household count. In schools with more than 350 students in the grade, a sample of students or classes was drawn. In schools with less than 350 students in a grade, all students were asked to participate unless logistical challenges required a sample be taken. Each school was asked to participate for two years so that each year one-half of the sample would be replaced. Schools refusing participation were replaced with similar schools in terms of geographic location, size, and type of school (e.g., public, private/Catholic, private/non-Catholic). For the 8th-grade survey, schools with less than 20 8th graders were excluded from the sample. For the 10th-grade survey, schools with less than 25 10th graders were excluded. The participation rate among schools has been between 66 and 80 percent since the inception of the study.
 
Weight:Each of the eight parts contains a weight variable, V5. They were originally varied by school but were modified to protect respondent confidentiality. Users should use the weight variable for all analyses, the results of which will differ slightly from published data tables that used original data.
 
Mode of Data Collection:on-site questionnaire
 
Response Rates:The student response rates for the 2008 8th- and 10th-grade surveys were 90 percent and 88 percent, respectively.
 

Access and Availability

Note:A list of the data formats available for this study can be found in the summary of holdings. Detailed file-level information (such as record length, case count, and variable count) is listed in the file manifest.
 
Restrictions:Users are reminded that these data are to be used solely for statistical analysis and reporting of aggregated information and not for the investigation of specific individuals.
 
Original ICPSR Release:2009-10-29
 
Version History:The last update of this study occurred on 2009-11-23.
 
  2009-11-23 - Corrections were made to fix minor errors in the data, question text, and documentation.
 
Dataset(s):
  • DS1: 8th-Grade Form 1 Data
  • DS2: 8th-Grade Form 2 Data
  • DS3: 8th-Grade Form 3 Data
  • DS4: 8th-Grade Form 4 Data
  • DS5: 10th-Grade Form 1 Data
  • DS6: 10th-Grade Form 2 Data
  • DS7: 10th-Grade Form 3 Data
  • DS8: 10th-Grade Form 4 Data
 
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