Recent debate regarding dual-task performance has focused on whether costs result from limitations in central capacity, and whether central operations can be performed in parallel. While these questions are controversial, the dominant models of dual-task performance share the assumption that central operations are generic--that is, their…

Three children with autism were taught to identify pictures of emotions in response to their spoken names. Their speed of acquisition was compared using a within-child alternating treatments design across three teaching conditions, each involving a 5 second delay to reinforcement. In the marked-before condition, an instruction encouraged the…

In American Sign Language (ASL), a receiver watches the signer and receives language visually. In contrast, when using tactile ASL, a variety of ASL, the deaf-blind receiver receives language by placing a hand on top of the signer's hand. In the study described in this article we compared the functions and frequency of the signs YES and #NO in…

This experiment examined the accuracy with which newborn infants orient their heads toward a sound positioned off midline within hemifields. The study also evaluated newborns' ability to update the angle of their head turn to match a change in localization of an ongoing sound. Alert newborns were held in a supine position and presented a sound at…

The proposition that the mechanisms underlying facial recognition are different from those involved in recognizing other classes of pictorial material was assessed following a general review of the literature concerned with recognizing faces. (Author/RK)

Article confined itself to criticism of the previous article in this journal and commented on three points: first, the need for the term autocontingency, second, contingencies and their subtlety, third, that fixed conditioned stimulus may mean that time since CS onset is a predictor of CS offset. (Author/RK)

Three dissimilarity measures for the unconstrained sorting task are investigated. All three are metrics, but differ in the kind of compensation which they make for differences in the sizes of cells within sortings. Empirical tests of the measures are done with sorting data for occupations names and the names of behaviors, using multidimensional…

Studied developmental differences in 3- to 7-year-old children's preferences for tickling or cuddling stimulation. (JMB)

The purpose of the present investigation was to explore the extent to which a subject's ability to conjure up an image of a visual stimulus can substitute for the presence of that stimulus when a comparison with another is required. (Author/RK)

Multidimensional scaling (MDS) offers a rigorous approach to many problems in perception, emotion, personality, and cognition, where the stimuli are too complex to be quantified by other means. In these procedures similarity ratings of the stimulus objects are modeled as points in multidimensional space, such that perceived similarity is…

The effects of pure tone stimulation on ongoing motor activity of infants 1 to 4 days of age were studied using a passive, contactless monitoring device. Stimuli were pure tone bursts of 0.5, 1, and 4 kHz presented free field at an approximate level of 70 dB A. Signal trials consisted of 500 ms tone bursts, with rise/fall time equal to 10 ms, and…

An analysis of preferences with respect to silhouette drawings of nude females is presented. Systematic intransitivities were discovered. The dispersions of differences (comparatal dispersons) were shown to reflect the multidimensional structure of the stimuli, a finding expected on the basis of prior work. (Author)

A theory on the features of a visual scene and how these features are organized to provide a representational model of the visual scene is presented. (HB)

This textbook presents Greek language to children using pictures associated with words. It teaches Greek letter pronunciation with examples of similar sounds in English words. The goal is to thoroughly understand words associated with the pictures and then to pronounce and translate the words without using the pictures.