Personality scale and item correlates of WAIS abilities

A cross-validation methodology was employed to identify 16PF scales and items that significantly correlated with performance on the verbal, spatial, and memory/numerical abilities measured by the WAIS in a nonpsychiatric sample of 489 adults. For both men and women larger personality-ability correlations resulted in all analyses for verbal ability than for spatial or memory/numerical ability. The 16PF scale analysis offered results generally consistent with Cattell's research. The item analyses produced rather similar results for both sexes for verbal and spatial abilities. For verbal ability three major correlates resulted: communicative competence, equanimity/low anxiety, and a desire for times alone. Though few in number the item correlates of spatial ability suggested a dispassionate, nontemperamental style of interaction with one's environment as the major correlate. Memory/ numerical ability was somewhat independent of 16PF item responses for women, but was associated with fastidiousness in men. Possible cause-effect relationships were suggested and implications for future research discussed.     

Metaphoric comprehension: Studies in reminding and resembling

The theoretical problems posed by metaphoric comprehension are discussed in the context of experiments on prompted recall. Listeners heard sentences of the form “Topic is (like) Vehicle.” In most cases, a statement of the implicit resemblance (the “ground”) was very effective in prompting recall of its related metaphor. This result could not be attributed to the activation, transfer, or additive combination of pre-existing properties of the topic and vehicle terms or to pre-existing associations between grounds and sentence terms. It is argued that the vehicle domain guides a novel schematization of the topic domain, that the perceived resemblance is a higher-order relation among entities (both explicit and implicit) in each domain, and that this abstract relation constitutes the “functional memory unit.” Prompted recall may begin with recognition of this previously experienced relation.     

Some characteristics of concurrent discrimination and retention by monkeys

Before and after learning-set training, 12 rhesus monkeys were tested on the acquisition and retention of tasks consisting of eight concurrent object discrimination problems. Training on the concurrent discrimination was administered unitil a fairly stringent acquisition criterion was met. Under these procedures, retention, unlike acquisition, was little influenced by initial object preferences. Excellent retention was observed both before and after learning-set training. In a second experiment, these same monkeys were tested on a series of concurrent tasks which provided different numbers of objects as the sets of correct and incorrect discriminanda. Task solutions depended largely upon acquiring and retaining a list of correct objects despite designation of the large or small sets as the correct one. The animals seemed not to use “exclusion” strategies even when this might have provided an efficient task solution. It was considered that the monkeys' performances were based on stimulus sampling characteristics like those seen in other discrimination testing situations.     

Induction of intellectual gains in blind children

Twenty blind children (5–10 years old) were taught the concept of seriation by a learning set procedure. Ten of the children were also taught a simple classification concept to see if developing both abilities would produce more general intellectual gains. Children in a control group had training sessions matched in timing and extent, but differing in content. The results indicate that mastery of the concepts of seriation and classification can be accelerated through training. Training also affected WISC and SIT IQ scores; for these measurements, the seriation-classification group showed the greatest increase. Training had no effect on measures of psychological and social adjustment. The findings suggest that learning set training of Piagetian concepts can be effective in overcoming some conceptual deficiencies found in blind children. It may be profitable to test similar procedures with other children who are biologically mature but lagging in conceptual development.     

The repetition effect in time judgments is not a function of the intensity of the stimulus defining the interval: implications for an arousal theory

College students (N = 17 per group) estimated the durations of time intervals ranging from 8 to 20 sec. Intervals were defined by tones of 35, 55, and 75 db for each of three groups. The estimates of all groups declined across trials, but the degree of decline did not differ as a function of stimulus intensity. These data call into question the view that the repetition effect is attributable to a decrement in general arousal.     

Transfer of effort across behaviors

A series of experiments investigated the effects of required force and number of responses per reinforcer upon the subsequent performance of a second behavior. In the first experiment, a group of rats required to complete five round trips in an alley per food pellet subsequently bar-pressed for food at a greater rate than a group rewarded for each round trip or a control group that did not receive the alley experience. In the second experiment, a group required to apply a 70-g bar-press force subsequently shuttled for food at a greater rate than a group required merely to touch the lever or a control group that did not undergo the lever-press manipulation. The third experiment found that the force effect persisted across all five test sessions and was attributable to differences both in response speed and interresponse time. The fourth experiment found that both the necessary bar-press force and number of bar presses per reward affected subsequent shuttling in extinction. Two alternative interpretations of these results were compared: (a) the degree of accustomed effort per reinforcer becomes a generalized component of instrumental behavior or (b) high effort increases the habituation frustration-produced disruptive responses.     

Some correlates of stuttering severity judgments

Thirteen adult male stutterers recorded the Amplifier Passage on high-quality audiotape. One sentence from each recording was paired with one sentence from each of the remaining 12 recordings. The resulting 78 sentence pairs were presented to eight speech-language pathologists who were asked to judge which stutterer in each pair was more severe and to rate the confidence of each of these judgements. The confidence ratings were analyzed by means of the individual differences model of multidimensional scaling. The results suggested that reading rate and the number of intrasentence pauses were important parameters in determining the severity of stuttering.     

Effects on weight reduction of strong monetary contracts for calorie restriction or weight loss

Thirty-one severely obese adults participated in behavioral weight control groups. In three groups utilizing powerful monetary contracts, subjects deposited substantial sums of money which were returned contingent on either attendance, calorie restriction, or weight loss. Subjects in a fourth no-contract control condition made no monetary deposits. Weight and calorie contract groups lost an average of nearly 20 lb in 10 weeks. They did not differ from each other, but both produced significantly more weight loss than the attendance contract group. High dropout rates in the no-contract condition precluded statistical evaluation of this group. Results are discussed in terms of the potential clinical value of contracting procedures.