Auditory and visual recognition were studied in subjects ranging in age from 10 to 60 years. In comparison with perceptual and response factors, memory scanning time is relatively insensitive to age differences, and auditory recognition involves the use of a pre-linguistic memory system insensitive to age differences. (Author/MF)

Contrary to Piaget's predictions, adolescent retardates and 9-year-old normals were more susceptible to the Oppel-Kundt Illusion than high school sophomores and adults. No group differences were found on the Poggendorf Illusion. (MH)

Tabulation of the color discrimination requisites of a representative sample of jobs revealed that the majority of jobs require little or no color perception aptitude. Jobs requiring color discrimination were listed by Dictionary of Occupational Titles for the use of counselors in the guidance of clients with defective color vision. (Author)

Responses of 241 convicts on 18 primary mental abilities were factored to explore the idea that there are organizations among visual and auditory functions that operate independently from the relation-perceiving and correlate-educing functions of fluid and crystallized intelligence. The suggested reliable common-factor functions are discussed.…

A study investigated the recall of terminal location and distance of both preselected and constrained movements. Systematic alteration of the magnitude and direction of the starting position for recall movements revealed that the distance moved significantly interfered with the recall of the terminal location, but that distance was usually…

Young children drew two opaque objects placed one behind the other. Over two-thirds of the children drew the objects separately in horizontal or vertical relationships. When drawing an object in a glass beaker, half of the children depicted the object vertically or horizontally separate from the beaker. (Author/DB)

Describes an investigation comparing visual and auditory clues effect on estimates of speakers' heights and weights, to determine if voice alone conveys as much information as visual clues. The results indicate that the differences between estimates based on photographs and those based on speech recordings are, on the average, very small.…

Stereoscopic photo activities for students are described for the purpose of motivating students in earth science. Included also is the necessary equipment for obtaining the three-dimensional effect. (SA)

The results showed that accuracy depended on both stimulus complexity, modality, and mental age, regardless of whether or not the Ss were retarded. The selection of haptic search styles also depended on these factors but, in addition, was influenced by the intellectual status of the children. (Author/DLS)

Six motion projections were presented to first graders, seventh graders, and college students (N=72) in order to determine whether children can utilize the same motion parallax information as can adults. (MP)