This report examines the extent and nature of marihuana use in the U.S. It presents information on the social and psychological influences as well as the toxicological and pharmacological effects. It also analyzes effects on behavior and discusses theraputic aspects of the drug. (Author/HMV)

This final report discusses the principal goals and achievements of the journal project "Language and Language Behavior Abstracts" during 1971. The objectives during this grant period were increasing income, improving the scholarly qualities of the journal, reducing operating costs where possible, and improving accessibility to scholars. Problems…

This study seeks to determine the degree to which certain behavioral measures interact with intelligence, whether in a linear or curvilinear fashion, to help one predict academic achievement in Head Start children to a greater degree than would be possible were intelligence test performance alone used as the predictor variable. Children were…

This document contains six studies concerned, primarily, with the effect of maternal influences and attitudes on preschool children. The subjects were lower class Negroes, whites, and Seminole Indians. The titles of the studies and the accession numbers of the individual abstracts are as follows: (A) Maternal Influences Upon Development of…

This report discusses the Columbia Classroom Environments Project Autonomy in Learning An Exploration of Pupils' and Teachers Roles in Different Classroom Environments to develop Criteria and Procedures for Evaluation in Project Follow Through. The report begins with a discussion of a set of matrices which combine all of the behavior code…

During the report period the researchers were primarily engaged in the spring data collection and in drawing up the outlines of the 1971-72 and 1972-73 phases of the study. This activity involved a great deal of conceptualization and inspection of raw data, toward the end of clarifying the theoretical frame of reference and the purpose and…

The Columbia Classroom Environments Project (CCEP) report discusses a number of questions about a set of dimensions of learning and development as well as the instruments the project was developing for the analysis of behavior in learning environments. Joseph C. Grannis examines The Argument, Assumptions, Definitions, Hypothesis; Rochelle Mayer…

This report is organized into seven chapters. Chapter One, an Introduction by Joseph C. Grannis, includes the most relevant sections of the proposal made by the Columbia Classroom Environments Project (CCEP) to Project Follow Through in August 1970. Chapter Two is an Analysis of the Child Behavior Stream Observations from the Spring 1971 Study of…

The study reported in the first part had two major goals: the construction of a pupil role interview schedule and the use of this interview to measure the influence of different programs in Project Follow Through on pupil role development. The second part of this report concerns a content analysis done by the Columbia Classroom Environments…

This project deals with characteristic functioning of lower class educationally disadvantaged preschool children, the impact of the preschool experience, and the personality of the child and his readiness to gain from the educational process. The disadvantaged preschool children functioned intellectually and verbally below their middle class peers…