Molenaar's (2015) article concerns Developmental Systems Theory (DST) in relation to behavior genetics and he presents implications of DST for empirical research, especially the need for subject-specific studies. In this commentary, the article is discussed from a broader developmental science perspective, particularly regarded through the lens of…

We discuss the limitations of hypothesis testing using (quasi-) experiments in the study of cognitive development and suggest latent variable modeling as a viable alternative to experimentation. Latent variable models allow testing a theory as a whole, incorporating individual differences with respect to developmental processes or abilities in the…

The goal of the present study was to examine the generalizability of a model of the underlying dimensions of written composition across writing systems (Chinese Mandarin vs. English) and level of writing skill. A five-factor model of writing originally developed from analyses of 1st and 4th grade English writing samples was applied to Chinese…

This paper presents a new perspective on the transition from early to middle childhood (i.e., human juvenility), investigated in an integrative evolutionary framework. Juvenility is a crucial life history stage, when social learning and interaction with peers become central developmental functions; here it is argued that the "juvenile transition"…

Builds on a 1983 pilot study of the sequence of feelings and behaviors in divorce, using 141 divorced persons. Model employed three process stages, three filing categories, and three variables. Results of phase two indicated modal frequency of responses at various stages. Recovery lag between actives and passives was not confirmed as in 1983…

Notes that the Piagetian perspective admits the existence of interindividual differences but interprets them as noise masking the universal logical succession of structures, whereas the differential perspective views development as consisting of "vicarious processes." Asserts that the main aim of the "procedural studies"…

In contemporary psychology there is debate over whether individual differences in psychological constructs are stable over extended periods of time. The authors argue that it is impossible to resolve such debates unless researchers focus on patterns of stability and the developmental mechanisms that may give rise to them. To facilitate this shift…

Because early theoretical frameworks such as Piaget's stage model and social learning theory sought to explain the development and performance of imitation in terms of overall group trends, any evidence for individual differences in this behavior was until recently largely overlooked. Results of contemporary imitation studies have not only begun…

A pair of 9-year-old boys with socioemotional and interpersonal difficulties was observed unobtrusively in 35 weekly hour-long therapy sessions over the course of 2 school years. A transcript/narrative analysis technique was used to identify all interpersonal negotiation strategies each child used within each session. Strategies were classified…

The application of Piagetian theory to educational practices encounters a series of major difficulties. The main focus of this paper is on the notion of general stages, which has been under attack in numerous studies. Organized in four parts, the paper: (1) discusses the problem of the existence of general stages and of a developmental…

In 2 studies, subjects between 7 and 16 years of age indicated predictions for the water level in a tilted container or the position of a plumb line. Found that sex differences were evident at all ages; task performance improved with age according to a discrete stage process; and task performance was determined by field effects and rule strategy.…

College honors programs provide an especially promising context in which to promote reflective judgment by challenging and expanding students' intellectual horizons. However, faculty must carefully assess the different levels of cognitive development among their students, cultivate the skills of reflective judgment accordingly, and understand that…

Stage-state analysis of the life course is presented as useful in identifying types of life courses and their relative frequency, in estimating the likelihood of moving from a given state through a sequence of future states, and in analyzing routes and processes connecting initial states with potential outcomes. (Author/DB)

This book defines and reviews five central problems in the study of second language acquisition (SLA): (subconscious) transfer, staged development, cross-learner systematicity, incompleteness, and variability. The central thesis of the text is that linguistic knowledge is an autonomous component of SLA, distinct from the socially determined use of…

Thirty-two preadolescents were observed in a longitudinal study of attachment and subsequent social development, and case studies of four friendship pairs were conducted. Findings suggest a process model of friendship formation based on repetition of infant attachment history in establishing children's preadolescent friendships. Proposes a 3-stage…