This article enters the debate about the complex and dynamical nature of second language acquisition (SLA) by discussing and commenting on Pallotti's critique of Complex Dynamic Systems Theory (CDST). Pallotti's critique brings to the fore the argument that, due to its anti-reductionist stance, CDST research fails to observe three fundamental…

Qualitative interviewing is a commonly used approach in the social sciences and is generally regarded as an effective way of developing understandings about everyday experiences and the meanings people attach to them. Where fieldwork time-frames are relatively short, a single interview with each participant is common. This paper explores the…

The special issue "Keeping Connected: Identity, Social Connection and Education for Young People" opens with a paper that discusses the research design and overview of a three-year project by a Melbourne (Australia)-based multi-disciplinary team. Over 2007-2009, the Keeping Connected team of 10 researchers investigated the lives of…

The present study examines the mediating and moderating effects of parenting behavior on the relation between marital problems and adolescent maladjustment. Extending earlier studies by using a prospective, longitudinal research design and multi-informant methods, this study of 451 adolescents and their families from the Iowa Youth and Families…

Communities That Care (CTC) is a prevention system designed to reduce adolescent substance use and delinquency through the selection of effective preventive interventions tailored to a community's specific profile of risk and protection. A community-randomized trial of CTC, the Community Youth Development Study, is currently being conducted in 24…

Notes that longitudinal data can play an important role in child psychopathology and treatment. Introduces review of some of the research questions that longitudinal designs can answer and how longitudinal studies have been used in evaluating traditional syndromes in child clinical psychology. (Author/NB)

Addresses strategies needed in using longitudinal data on psychopathology to test cause-and-effect relationships, including natural experiments, testing of competing hypotheses on mechanisms, study of reversal effects, multiple replications in different circumstances, use of designs to dissociate possible mechanisms, testing for dose-response…

Used structural equation modeling with latent variables to examine group differences and test competing models about cause-effect relationships in passive longitudinal designs. Within example based on three-wave longitudinal study of adolescents' alcohol use, assessed generalizability of measurement model and structural model across gender and…

This paper uses a case history approach to present the evolution of two longitudinal studies, Youth in Transition, which involved 8 years of data collection (1966-1974) and Monitoring the Future, for which data collection began in 1975 and continues in the present. The Youth in Transition project is described as a study of the causes and…

This article critically reviews the literature about adolescent males' sexuality in order to describe the state of the science and to identify promising concepts and research designs that have the potential to guide the next generation of research. A critique was conducted on 94 peer-reviewed studies of sexual behaviors that included a sample of…

This paper describes two culturally-sensitive longitudinal studies of normal development of Puerto Rican adolescents and children growing up in the United States. A number of areas pertinent to Puerto Ricans and other minorities that have previously been neglected are studied. Both projects are grounded in a cultural-ecological approach in which…

This first volume of a planned series summarizes the first 2 years of a 6 year longitudinal study of about 2,200 tenth grade boys in public schools. The broad purposes were to study the student and his changes, plans, and behavior. "Conceptual Framework and Purposes" presents a conceptual framework that views the major criterion areas of growth…

A 10-year study identified risk factors and measured prevalence of alcohol abuse, drug abuse, and psychopathology in 523 urban American Indian adolescents and 276 urban Indian women. Describes study aims, research design, methods, sample characteristics, assessment instruments, substance use prevalence, and methodological issues related to…