Genetic mediation of sex differences in horizontality: A rejoinder

Neither M. G. McGee (Developmental Review, 1981, 1, 289–295) nor M. J. Allen, M. A. Wittig, and K. Butler (Developmental Review, 1981, 1, 284–288) suggest any alternative explanation for our finding that water-level performance appears to have an X-linked genetic basis. The power calculations of Allen et al. are found to be faulty, and McGee confuses the hypothesis we tested with a weaker hypothesis. Although the X-linked genetic model is not an adequate model of water-level performance the water-level data fit the X-linked model far better than color blindness and HCN data McGee presents as exemplars of X-linked characteristics.     

Causal patterns related to post high school employment satisfaction

A linear recursive path model was developed and evaluated using a combined male and female sample, and separate male and female samples in an attempt to identify causal relationships of in-school student characteristics to satisfaction in post high school employment. The statistical methodology used was Path Analysis. A total of ten student characteristic variables were used in the model. The findings indicate that overall job satisfaction is related to variables which are associated with the affective domain. These variables are: Occupational Values-Interest and Satisfaction and Salary, and Vocational Maturity. Overall, employment satisfaction was twice as predictable for the female sample as it was for the combined sample and it was not at all predictable for the male sample.     

Effects of wage inequities on work attitudes and performance

A replication and extension of the Adams and Jacobsen (1964) investigation of inequity theory was carried out using a 3 × 2 experimental design with three levels of compensation and two levels of qualifiedness. This design included an overcompensated condition in which the overpayment was not confounded with unqualifiedness, thereby allowing a comparison of differential predictions from inequity and expectancy theory. Comparisons of over and underpayment conditions were also made to test the differential threshold hypothesis of inequity theory. Attitudinal as well as performance data were collected to investigate the possibility of differing modes of inequity reduction.The major finding in the present study was that variations in manipulated perceptions of qualifiedness produced significant effects upon both quality and quantity measures of work behavior while induced variations in the amount of anticipated compensation only affected quality of work. The qualified conditions produced fewer pieces of higher quality. This finding was discussed from the point of view of inequity theory as well as an alternative “self-esteem” explanation.Differences in work performance across pay levels were nonsignificant with the exception of a work quality measure in which the overpaid qualified group produced significantly more errors than the standard pay-qualified group. Possible interpretations of these findings were discussed and a range of conditions which may affect perceptions of inequity were considered.     

Infants and I scales: Inferring change from the ordinal stimulus selections of infants for configural stimuli

The analysis of I-scale preference orders of 71 infants 2 to 9 months old to four face-like stimuli suggested a common J-scale stimulus ordering for each of the four age groups. Changes in I-scale frequencies were used as a measure of age-related changes in preference orders. Results revealed no change in preference for the age period studied. Together with other data these results suggest an ageinvariant preference for organized face-like forms from at least as early as five weeks through 9 months. This finding is at variance with some theoretical expectations. A Thurstone analysis is provided as a contrast to the J-scale analysis. Assumptions of different data analyses are considered as the basis for varying results reported in the literature.     

Critical procedural variables related to the physiological effects of progressive relaxation: a review.

Twenty-five investigations of the physiological effects of progressive relaxation training were classified according to whether relaxation was found to be superior or equivalent to control conditions. The two sets of studies differed significantly on number of training sessions and in the use of taped vs live administration of training, and they tended to differ in the use of normal vs patient samples. The likelihood of producing significant physiological reductions via progressive relaxation appears to be greater when multi-session, subject-controlled training is conducted with subjects for whom physiological activity contributes to a presenting. clinical problem.     

Cumulative integrated electromyographic activity of selected speech-related muscle groups of nonstutterers during massed oral readings

The electromyographic (EMG) integrated amplitude of masseter and laryngeal muscle groups were analyzed during five massed oral readings of 16 nonstuttering adult subjects. Reduction in dysfluencies were observed over the five trials as was a reduction in reading time across trials. Significant decreases in EMG activity across trials were found for the laryngeal, but not the masseter, EMG activity. This suggests that changes in vocal behavior thought to accompany adaptation are reflected in decreases in EMG activity of select speech-related muscle groups.     

Dichotic listening in a child recovering from acquired aphasia

A right-handed 6-year-old boy with acquired aphasia of left-hemisphere origin was investigated with various dichotic listening tasks 8 and 13 months after onset of the symptoms. Total right ear extinction was found repeatedly using both numbers and words as stimuli. Furthermore, magnitude of right ear extinction was not amenable to modification through verbal training, but disappeared when words were presented to the child's right ear with simultaneous white noise to the left ear. The findings are discussed in terms of the plasticity of cerebral dominance during childhood.