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Han, ZhaoHong, Ed. – Multilingual Matters, 2019
This volume sheds empirical light on Complex Dynamic Systems Theory (CDST) by providing five sets of analyses of two longitudinal, interactional datasets, involving two dyads exchanging emails over one academic semester. The collective study on CDST is the first of its kind, in that it delves into multiple subsystems of learner language,…
Descriptors: Profiles, Second Language Learning, Second Language Instruction, Systems Approach
Tomblin, J. Bruce, Ed.; Nippold, Marilyn A., Ed. – Psychology Press, Taylor & Francis Group, 2014
This volume presents the findings of a large-scale study of individual differences in spoken (and heard) language development during the school years. The goal of the study was to investigate the degree to which language abilities at school entry were stable over time and influential in the child's overall success in important aspects of…
Descriptors: Individual Differences, Language Acquisition, Language Skills, Longitudinal Studies
Zelazo, Philip David; Blair, Clancy B.; Willoughby, Michael T. – National Center for Education Research, 2016
Executive function (EF) skills are the attention-regulation skills that make it possible to sustain attention, keep goals and information in mind, refrain from responding immediately, resist distraction, tolerate frustration, consider the consequences of different behaviors, reflect on past experiences, and plan for the future. As EF research…
Descriptors: Executive Function, Attention Control, Educational Research, Learning Processes

Lewis, Michael; And Others – Developmental Psychology, 1985
Compares attachment relationships of infants at 12 months to their visual self-recognition at both 18 and 24 months. Individual differences in early attachment relations were related to later self-recognition. In particular, insecurely attached infants showed a trend toward earlier self-recognition than did securely attached infants. (Author/NH)
Descriptors: Attachment Behavior, Individual Differences, Infants, Longitudinal Studies

Watson, Marie Mae; Scukanec, Gail P. – Infant-Toddler Intervention: The Transdisciplinary Journal, 1997
This study examined phonological changes in the conversational speech of children between the ages of 2 and 3 years. Phonological analysis of conversational samples obtained from the same children at three-month intervals showed significant differences among children in rates of final consonant deletion, cluster reduction, vowelization, and…
Descriptors: Child Development, Individual Differences, Longitudinal Studies, Phonology
Field, Dorothy; Schaie, K. Warner – 1985
While research has examined both life satisfaction and intellectual functioning of older adults, the relationship between these two dimensions has been investigated very little. A study was conducted to explore continuity in intellectual functioning over time in advanced old age, continuity in life satisfaction during the same period, the…
Descriptors: Age Differences, Aging (Individuals), Individual Differences, Intelligence

Rutter, D. R.; Durkin, Kevin – Developmental Psychology, 1987
Reports findings of a cross-sectional study and a longitudinal study of infants' and toddlers' interaction with their mothers. Findings indicated active structuring of vocal interaction by the end of the infant's second year; gaze began to approximate the typical adult pattern of signaling as early as 18 months. Implications for theory and…
Descriptors: Coordination, Cross Sectional Studies, Individual Differences, Infants

Pettit, Gregory S.; Bates, John E. – Child Development, 1984
Investigated continuities in mother-infant interaction observed at home, maternally perceived infant difficulties, and infant developmental competency. Also assessed were background characteristics and possible variables moderating maternal report of satisfaction with adjustment. A total of 128 dyads were assessed when infants were 6 and 13 months…
Descriptors: Competence, Individual Characteristics, Individual Differences, Infants

Belsky, Jay; And Others – Child Development, 1984
Aimed (1) to determine whether a time sampling, frequency-count procedure for assessing mother-infant interaction could capture a set of theoretically important dimensions, and (2) to chronicle both ability and change within the mother-infant relationship. A total of 74 dyads were observed when infants were 1, 3, and 9 months of age. (Author/RH)
Descriptors: Individual Differences, Infants, Longitudinal Studies, Mothers
Mumford, Michael D.; Owens, William A. – 1983
Inherent limitations on the feasibility of experimentation have made it difficult for investigators to formulate an adequate understanding of individuality as a psychological phenomenon. Recently, Fiske (1979) and Sontag (1971) have suggested that application of a longitudinal or developmental strategy might be of some use in remedying this…
Descriptors: Adjustment (to Environment), Classification, Developmental Psychology, Higher Education

Vihman, Marilyn May; Greenlee, Mel – Journal of Speech and Hearing Research, 1987
The persistence of individual differences in phonological development of 10 normally developing children observed at age one and again at age three was studied. The children differed considerably in rate of vocabulary acquisition and relative phonological maturity and also in their general approach to learning. (Author/JDD)
Descriptors: Cognitive Style, Early Childhood Education, Individual Differences, Longitudinal Studies

Shore, Cecilia; And Others – Developmental Psychology, 1984
Combinatorial abilities in language and elicited symbolic play were compared in a longitudinal study of 30 children at 20 and 28 months. In addition, multivariate analyses were used to assess the stability of individual differences. Generally, different symbolic play variables contributed unique explained variance to different language variables.…
Descriptors: Body Language, Child Language, Comparative Analysis, Individual Differences

Diamond, Adele – Child Development, 1985
Twenty-five infants were tested every two weeks on the AB Object Permanence Task, from the time they first reached for a hidden object until they were 12 months old. Results indicate that the AB provides an index of the ability to carry out an intention based on stored information despite a conflicting habitual tendency. (Author/RH)
Descriptors: Cognitive Processes, Error Patterns, Individual Differences, Infant Behavior
Steffens, Michele L.; And Others – American Journal on Mental Retardation, 1992
The development of early vocalizations was investigated with 13 infants who had Down's syndrome and 27 infants developing normally, at bimonthly intervals from 4 to 18 months of age. Both groups demonstrated increased production of mature syllables over time as well as large variations in vocal development, both within and across groups and across…
Descriptors: Child Development, Comparative Analysis, Downs Syndrome, Individual Differences
Field, Dorothy; Schaie, K. Warner – 1985
While changes in levels of activity and in social relationships in old age have interested researchers for some time, longitudinal studies have only recently begun to yield information about changes in social relationships across time for older adults. Parents (N=74) of the 1928-1929 Guidance Study and Berkeley Growth Study children, who are now…
Descriptors: Age Differences, Aging (Individuals), Friendship, Individual Differences
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