This study investigated pregnant teenagers' knowledge about infant development during the period of their pregnancy. The sample consisted of 98 teenagers between 14 and 19 years old who were pregnant with their first child; all were planning to keep their babies. The group was approximately 50% black and 50% white, 50% middle class and 50% working…

The purpose of the study was to establish dimensions of functioning accounting for interindividual variation in behavior in the later infancy period and to investigate the stability of the dimensional structure during the infancy period. Factor analyses were performed on parent questionnaire data for 357 infants, aged 11 to 15 months. An 8-factor…

The purpose of this study was to apply factor analysis techniques to delineate dimensions of early infant behavior and to establish categories of functioning which can be seen as a source of individuality in early childhood. Data about the behavior of 791 infants in two age groups (11-25 weeks and 26-41 weeks) were obtained using a questionnaire…

This paper presents a pilot study designed to suggest an experiential interpretation of the development of extreme activity levels in infants (specifically, hyperactivity) and to demonstrate that general activity in infants may be influenced by the reinforcement contingencies established by mothers. Subjects were three 13-week-old infants. Operant…

This guide outlines in chart form the speech, hearing, and language behaviors which may be expected from children of ages 3 months through 5 years. It is designed to indicate progress and to alert parents and professional personnel to deviations from normal development. The information, in question-answer form, sketches behaviors for nine age…

The study was designed to investigate the exploration and attachment behavior of young children in a strange situation in the presence of: (1) an individual to whom the child was attached (the mother); (2) an inanimate object with which the child was highly familiar (favorite toy); and (3) a novel inanimate object (an unfamiliar toy). The effect…

This study is the third of three investigating attentional preference in infants. In the second study (PS 003 071), infants gave initial attentional preference to familiar patterns of visual stimuli, and later switched their preference to the unfamiliar, novel stimuli. The purpose of the present study was to duplicate these results with improved…

The status and progress of several studies dealing with the nature of speech, instrumentation for its investigation, and instrumentation for practical applications is reported on. The period of January 1 through June 30, 1969 is covered. Extended reports and manuscripts cover the following topics: programing for the Glace-Holmes synthesizer,…

This document presents an analysis of the early attending responses and orienting reactions of infants which can be observed at birth and shortly thereafter. Focus is on one specific orienting reaction, the early direction and maintenance of one's eyes and head toward certain stimuli instead of others. The physical properties of stimuli that…

The Flint Infant Security Scale measures an infant's behavior in order to establish the child's ability to accept dependence upon their caretaker and to put forth effort when the occasion calls for it. Both these aspects of behavior are reflections of the child's sense of security and feeling of self-worth. The Scale, consisting of the Manual and…

This paper has two major purposes: first, to consider how infant feeding behavior may fit into attachment theory; and second, to cite some evidence to show how an infant's early interaction with his mother in the feeding situation is related to subsequent development. It was found that sucking and rooting are precursor attachment behaviors that…

The purpose of the present study was to investigate more directly the effects of content and repetition of contingent visual feedback on a discrete operant pulling response and accompanying visual attention in 24 six- to seven-month old infants. Simultaneous recording was made of infant operant behavior and visual attention. Results indicated…

This brief report summarizes a study to identify primary bound conditions of sound level selection as a first step in collecting base-line data for evaluating selective listening performance in infants with known or suspected hearing loss. Ten normal 9 to 22 month old infants in their home cribs played with an automated operant "toy" that allowed…

This experiment asked whether infants at 5 months perceived an invariant over four types of rigid motion (perspective transformations), and thereby differentiated rigid motion from deformation. Four perspective transformations of a sponge rubber object (rotation around the vertical axis, rotation around the horizontal axis, rotation in the frontal…