Study Search Results Your query returned 1 results. Series results are grouped under the most relevant study. You can ungroup series results. Results per page: 25 50 100 Sort by: Title A-Z Released/Updated Time Period Most Cited in ICPSR Bib. Most Downloaded (?) Study Title/Investigator 1. Project on Human Development in Chicago Neighborhoods (PHDCN): Emotionality, Activity, Sociability, and Impulsivity Temperament Survey, Wave 1, 1994-1995 (ICPSR 13586) Earls, Felton J.; Brooks-Gunn, Jeanne; Raudenbush, Stephen W.; et al.