The use of the mental development index of the Bayley scale to diagnose language delay in 2-year-old high-risk infants

To determine if a detailed analysis of the language items of the Bayley Scales of Infant Development (BSID) would be useful in detecting language delay, the Bayley Mental Development Index (MDI) and Reynell Developmental Language Scales (RDLS-R) were administered to 137 low-birthweight infants at 2 years of age. In spite of scores in the normal range on the BSID, many of these children had significantly delayed language. However, the children with delayed language could be detected on the basis of detailed analysis of certain language items of the MDI, indicating that these items are more useful than the total MDI score.     

Client Precounseling Preparation in an Employment Service Setting

It is hypothesized that vocational clients who receive precounseling preparation adopt a role in counseling that is more realistic and effective than the role adopted by clients who do not receive such preparation. Twenty-four Ss who were given a precounseling lecture-discussion were compared to twenty-three control Ss. The hypothesis was verified. Other implications of the study are discussed.     

The gaze selects informative details within pictures

Attention, Perception, & Psychophysics - The visual fixations of 20 Ss viewing each of two pictures were measured. Each picture was later divided into 64 squares, and 20 other Ss judged their...     

A hullian reasoning situation

An experiment on a well-known but little-investigated situation proposed by Hull, is reported. The results are inconclusive.     

An anger-control intervention with aggressive delinquent youths

Social problem-solving skills, a self-instructional procedure, and a “thinking-ahead” procedure were taught to institutionalized, aggressive, delinquent adolescents as part of an anger-control intervention package. A multiple baseline design across four subjects and an alternating-treatments design were used. The effects of intervention were assessed on problem-solving ability, use of self-guiding verbalizations for coping with anger provoking situations, reported frequency of anger-control behaviors relative to loss of anger-control incidents, and behavioral progress within the institution. All youths showed improvement during the training of problem solving on hypothetical dilemmas, with some generalization to untrained problems. Follow-up data on some youths suggested maintenance of treatment gains. Three of the youths displayed increased usage of self-instructions and thinking-ahead statements during personal anger-provoking situations. All youths displayed an increase in self-reported anger-control behaviors relative to loss of anger-control. Improvements in behavior outside of the therapy sessions were indicated by positive behavioral progress within the institution.     

Use of Socially Dependent Bases of Power: French and Raven's Theory Applied to Workgroup Leadership1

This study examines how supervisors from three different organizations use social power in workgroups. A sample of 127 leaders completed a self-report questionnaire describing social influence attempts using a scale derived from French and Raven's (1959) five bases of social power. The results show no significant differences between organizations in use of the bases of social power. Referent and Expert powers were used significantly more frequently by these leaders than Legitimate, Reward, and Coercive powers. The number of subordinates supervised within the workgroup was significantly correlated with increased use of Coercive power by the workgroup leader. These results are discussed in terms of the potential for using socially dependent influence to explain leaders' direction of workgroup members.     

Unconscious processing of dichoptically masked words

In three experiments, the subjects' task was to decide whether each of a series of words connoted something good (e.g., fame, comedy, rescue) or bad (stress, detest, malaria). One-half second before the presentation of each such target word, an evaluatively polarized priming word was presented briefly to the nondominant eye and was masked dichoptically by either the rapidly following (Experiment 1) or simultaneous (Experiments 2 and 3) presentation of a random letter-fragment pattern to the dominant eye. (The effectiveness of the masking procedure was demonstrated by the subjects' inability to discriminate the left vs. right position of a test series of words.) In all experiments, significant masked priming effects were obtained; evaluative decisions to congruent masked prime-target combinations (such as a positive masked prime followed by a positive target) were significantly faster than those to incongruent (e.g., negative prime/positive target) or noncongruent (e.g., neutral prime/positive target) combinations. Also, in two of the three experiments, when subjects were at chance accuracy in discriminating word position, their position judgments were nevertheless significantly influenced by the irrelevant semantic content (LEFT vs. RIGHT) of the masked position-varying words. The series of experiments demonstrated that two very different tasks--speeded judgment of evaluative meaning and nonspeeded judgment of word position--yielded statistically significant and replicable influences of the semantic content of apparently undetectable words. Coupled with previous research by others using the lexical decision task, these findings converge in establishing the reliability of the empirical phenomenon of semantic processing of words that are rendered undetectable by dichoptic pattern masking.     

Prediction accuracy and memory performance: Correlational and experimental tests of a metamemory hypothesis

Summary In the performance prediction paradigm both a prediction of subjects' own memory performance (P) and their actual performance (A) are assessed. Prediction accuracy (PA) has been regarded as a measure of memory monitoring which in turn was assumed to be related positively to memory performance. A popular approach to test this metamemory hypothesis is based on correlations between measures of PA and of A. This approach is reexamined critically with regard to two classes of problems. The first is concerned with the definitions of at least six different PA measures represented in the literature. The second refers to statistical artifacts resulting from the part-whole character of the correlations between PA and A. Proceeding from the conclusion that a valid test of the metamemory hypothesis is not possible on the basis of correlations of PA and A, we propose an experimental procedure that properly permits the testing of the hypothesis that the utilization of monitoring activities during learning yields higher levels of memory performance.     

Modality-repetition and attentional effects on reflex blinking in infants and adults

The ability of a brief prepulse to inhibit reflexively elicited startle is a robust phenomenon in adults of several species but is weak or absent in infants. The possibility that afferent processing of the prepulse is inadequate in infants was tested by assessing the integrity of two other types of reflex modulation that occur in modality-specific paths, that is, attenuation by repetition of same-modality stimuli and enhancement by modality-selective attention. The reflex, measured by electromyographic activity of the muscle controlling blink, was elicited by intense light flashes or noise bursts preceded by brief acoustic or visual prepulses and delivered during attention-directing acoustic or visual foregrounds that evoked cardiac deceleration. Modality-repetition effects were evidenced by smaller peak blink magnitude and longer latency of blinking to same than to different modality pairs and did not differ as a function of age (4-month-old infants or college students). Attention effects were also seen in both infants and adults and, in accord with previous findings, were evident in magnitude for infants and latency for adults. Thus, immaturity in paths mediating these effects could not explain delayed development of prepulse inhibition. Other possibilities include delayed maturation of extrinsic inhibition or of transient-processing systems.