This study examined the hypothesis that the effective visual field of 5-year-old children is smaller than that of 8-year-old children and adults. In addition, an effort was made to determine whether task demands affect the size of the effective visual field and if so, whether the effects on performance are different for children and adults. A…

This paper reports an investigation of gender-indicating acoustic properties of the vocalizations of 73 six- and seven-year-old speakers. Tape recorded samples of these children's isolated vowel and sentence productions were presented in four listening sessions. One hundred and sixteen young adult (age 17-24) female listeners made gender judgments…

Experiments within the microgenetic paradigm provide an assessment of the role of stimulus structure and, inferentially, of cognitive structure on perception. Two experiments investigating the effect of redundancy (structure) in written language on visual perception are reported. Seven-letter arrays differing in percentage of redundancy were…

This experiment investigated the capability for movement and muscle spindle function at successive stages during the development of ischemic nerve block (INB) by pressure cuff. Two male subjects were observed under six randomly ordered conditions. The duration of index finger oscillation to exhaustion, paced at 1.2Hz., was observed on separate…

In a memorandum to the Chief of Planning and Program Development, Teacher Corps, the Program Development Specialist for the Pontiac Urban Corps in Oakland examines the role of the program development specialist. Although the program was successful in that 31 beginning teachers were placed and modules were developed in three discipline areas, the…

During the 1969-70 academic year the author engaged in an extensive program of research training at the Bell Telephone Laboratories. He studied multidimensional scaling techniques and used many of these techniques in the analysis of data resulting from experiments and studies of the visual and cognitive perception of letters and words. The…

A 2 x 2 x 2 x 2 factorial design was utilized to investigate the effects of race of expressor (black and white), sex of expressor, race of perceiver and sex of perceiver on perception of emotion (POE). Perception of seven emotions (anger, happiness, surprise, fear, disgust, pain, and sadness) was analyzed in terms of three dependent variables: (1)…

An experiment was conducted comparing the abilities of normal and retarded third-, fourth-, fifth-, and sixth-grade readers to report the temporal and spatial order of presentation of letters. The presentations were accomplished by using animated techniques on motion picture film. It was found that while the retarded readers were inferior to the…

This study tested the hypothesis that newborns selectively orient toward angular elements in their visual field. Subjects were 36 awake and alert infants under 6 days of age. For each newborn, the study compared visual attention to three separately presented stimulus patterns: a complete outline triangle, only the sides of this triangle, and only…

The real impact of cinema consists in its ability to translate symbols, the mind's form of language, into dynamic moving images. Man's visual orientation produces both his positive reaction to motion--a key element in cinema--and his perceptions of coded, visual information--symbols. The complex relationship between symbols and rhythmic motion…

This study was designed to test the hypothesis that a measure of students' influence relative to teachers' influence is needed in the classroom. The Hit-Steer system, designed by Thibaut, Coules, and Robinson to reveal the patterns of teacher and pupil influence as expressed classroom interaction, was used to observe teachers and students in a) 14…

The purposes of this study were to investigate adolescent intellectual decline, and to attempt to determine some of the sexual differences possibly inherent in the phenomenon. It was hypothesized that (1) girls would decline in greater numbers and to a greater degree than boys; and (2) areas and amounts of sex differences of the decliners would…

The purpose of the project was to gain information with which to improve the quality of tactual maps for the blind. Empirical studies of the pair-comparison type were conducted, using blind students as subjects, to determine discriminable sets of areal, linear, and point symbols made in plastic and to identify discriminable sets of linear and…

Fifty 4-month-old infants were habituated to one wavelength of light and then tested for recognition with the original and two new spectral lights. After short- and long-term delays with different types of retroactive interference, the results indicated that the infants' recognition memory for hue was quite resilient to interference or delay. (JMB)

Corneal infrared photography was used to record the visual fixations of 24 infants (4-6 weeks and 10-12 weeks) exposed to simple geometric figures. The results are discussed in relation to developmental changes in responsiveness to visual figures and in increasing ability to process information. (JMB)