Teaching generalization of purchasing skills across community settings to autistic youth using videotape modeling.

Three young autistic adults were trained to purchase items. Training was conducted in one setting with concurrent generalization probes taken in three community stores. Training in one setting failed to produce generalization to the three probe settings. Generalization training, which consisted of viewing videotapes of models who purchased items in the probe settings and answering questions about the models'' responses, was then introduced. Training with the videotapes resulted in generalization to the three community stores. Results of the use of videotapes as a cost-effective means to program generalization in community training programs are discussed.     

Newborns' discrimination of chromatic from achromatic stimuli

Two experiments assessed newborns' ability to discriminate chromatic from achromatic stimuli. In Experiment 1, newborns differentiated gray from green, from yellow, and from red: For each of these hues they preferred chromatic-and-gray checkerboards over gray squares matched in mean luminance, even though the luminance of the gray checks was varied systematically over a wide range so as to minimize nonchromatic cues. However, newborns showed no evidence of differentiating gray from blue: At some luminances they showed no preference for a blue-and-gray checkerboard over a gray square. In Experiment 2, newborns differentiated red from gray but appeared not to differentiate blue from gray: Following habituation to a series of gray squares of varying luminance, they looked longer at a red square than at a gray square of novel luminance but showed no such pattern of recovery to a blue square. The results imply that newborns have some, albeit limited, ability to discriminate chromatic from achromatic stimuli and hence, that they are at least dichromats.     

Developmental changes in response preparation to visual stimuli

We examined how preparation to respond changes with age. Subjects from four age groups (5- to 7-, 8- to 11-, 12- to 17-, and 18- to 24-yr.-olds) were given a simple visual RT task with foreperiod duration varied between 300 and 2000 msec. Analysis showed that in addition to the expected effects of age and foreperiod, there were qualitative differences between the performance of adults and children: 5- to 7-yr.-olds reacted quickest after a foreperiod shorter than that required by adults to perform best. Conversely, preadolescents' optimal foreperiod was relatively longer than that of either older or younger subjects. In addition, the youngest subjects showed an inability to maintain preparation as efficiently as older subjects. Implications for the development of response preparation are discussed.     

Long-term memory for a common object

A series of experiments was done to determine how completely and accurately people remember the visual details of a common object, a United States penny. People were asked to: draw a penny from unaided recall; draw a penny given a list of its visual features; choose from among a list of possible features those which do appear on a penny; indicate what was wrong with an erroneous drawing of a penny; and select the correct representation of a penny from among a set of incorrect drawings. Performance was surprisingly poor on all tasks. On balance, the results were consistent with the idea that the visual details of an object, even a very familiar object, are typically available from memory only to the extent that they are useful in everyday life. It was also suggested that recognition tasks may make much smaller demands on memory than is commonly assumed.     

The eating behavior of obese and nonobese women

Sixty-one obese, normal weight and thin women were observed for 30 minutes as they consumed a free-choice lunch in a quasi-naturalistic setting. Their behavior was unobtrusively quantified in terms of microbehavior (mouthfulls, chews, drinks and pauses) and of the macrobehavior (type and amount of food consumed and total active eating or drinking time). Information on subject and environmental variables are also reported. Observed behavior was analyzed as comparative group totals and as patterns of behavior over time. Comparison of group totals showed that: (a) there were no differences in types of food or number of calories consumed between the three groups, (b) no differences were found between the eating behavior of the normal weight and the obese and (c) the obese women spent less time actively eating, less time chewing and more time drinking than did the thinnest group. Pattern analysis revealed a decrease in all responses over time but showed no significant pattern difference between groups.     

Perceptual study of the speech of “successfully therapeutized” stutterers

The purpose of this investigation was to determine if the fluent speech of “successfully therapeutized” stutterers and a group of partially treated stutterers was perceptually different from the fluent speech of normal speaking subjects. Tape recorded speech samples of treated stutterers were obtained from leading exponents of (1) Van Riperian, (2) metronome-conditioned speech retraining, (3) delayed auditory feedback, (4) operant conditioning, (5) precision fluency shaping, and (6) “holistic” therapy programs. All forms of disfluency were edited out of these tapes. The remaining samples were then paired with matched fluent samples of normal talkers and presented to a group of 20 sophisticated judges. The judges were instructed to select from each paired speech sample presented to them the one produced by the stuttering subject. The results of the analyses of variance for correct identification of the stutterers showed that the partially treated stutterers, as well as each group of therapeutized stutterers, were identified at levels significantly above chance. This meant that the fluent speech of the partially and successfully treated stutterers was perceptibly different from the utterances of the normal speakers sampled. In addition, the analyses of variance also revealed that all stuttering groups had a significant severity factor. This finding indicated there was a significant difference between the severity subgroup in all the samples investigated. These results were discussed in terms of their clinical implications.     

Stuttering theory,research, and therapy: The present and future

The purpose of this article is to describe present dominant themes in stuttering theory, research, and therapy, and then suggest some directions that work in these areas might now take. The recommendations offered are not all-inclusive, nor do they represent imperatives for future work. Rather, the suggestions put forth seem to follow logically from the present state of theorizing, data gathering, and clinical management.     

Sex differences in dominance behavior

The effect of the status characteristic of sex on dominance behavior was investigated as a function of a challenger's sex and in relation to one's sex-role orientation. Dyads composed of a student and a confederate recorded individual preferences, then joint decisions, for the more attractive picture of 20 pairs of pictures. The number of challenges a student sustained each time a disagreement occurred regarding the more attractive picture of a pair was recorded. Males withstood significantly more challenges against their preferences than females did (p<.006). However, no differences were found as a function of the sex of one's partner; nor did the Attitudes toward Women Scale (AWS) prove to be a good predictor of dominance. Results were discussed in terms of predictions made by the theory of status characteristics.This report is based on a master's thesis written by the first author under the sponsorship of the second and submitted in partial fulfillment of the requirements for the MA degree at the Graduate School of the University of Alabama. Portions were presented as part of of the paper session Compliance-Conformity/Altruism-Helping Behavior at the annual meeting of the Southeastern Psychological Association, New Orleans, March 1976.The authors would like to express their appreciation those who served as confederates in this study: Jim Dodds, Rochelle Hanan, Eunice Fogarty, and Rex Hall.