Antecedents of information-processing skills in infants: Habituation, novelty responsiveness, and cross-modal transfer

Three skills which characterize cognitive functioning in human infants in the middle of the first year of life—habituation, novelty responsiveness, and cross-modal transfer—predict mental ability in later childhood. Antecedents of each skill at 5 months postnatal were examined in a short-term prospective longitudinal study of infant ability and maternal intelligence and interaction style. Infant perceptuocognitive performance at 2 months, maternal intelligence, and maternal responsiveness at 5 months relate to the expression of the three infant cognitive skills, but in different ways. Variation in infant information-processing abilities can be explained by specific child and maternal factors that are evident soon after birth.     

Does stimulus correspondence account for the Simon effect? Comments on Hasbroucq and Guiard (1991)

Summary In a recent paper analysing the Simon effect, Hasbroucq and Guiard (1991) concluded that stimulus congruence, a correspondence relationship between stimulus components, accounts for the Simon effect and explains its reversal in the Hedge and Marsh experiment (1975). We contend that their definition of stimulus congruence is applied inconsistently, which invalidates their conclusion. It is argued here that the effect of display-control arrangement correspondence (Simon, Sly, & Vilapakkam, 1981) is an alternative account that fits the presented data better. In a second experiment, Hasbroucq and Guiard (1991) claimed to have invalidated the suggestion that display-control arrangement correspondence could be considered to be an alternative account of the findings in their Experiment 1. However, we assert that the type of display-control arrangement employed in their second experiment was so unpredictable that no effect of display-control arrangement correspondence could occur.     

Examining the relationships between the socially desirable and undesirable aspects of agency and communion

Sex Roles - Two theories addressing the relationship between the socially desirable and undesirable elements of agency and communion have been proposed. In their 1979 study, Spence, Helmreich, and...     

The functional role of attention for spatial coding in the Simon effect

Summary Two experiments investigated relative spatial coding in the Simon effect. It was hypothesized that relative spatial coding is carried out with reference to the position of the focus of visual attention. The spatial code for an imperative stimulus presented exactly at the position of focal attention should be neutral on the horizontal plane, and therefore no Simon effect should be observed. However, when the imperative stimulus is presented to the left or to the right of the current position of focal attention, the spatial code should not be neutral, thus producing a Simon effect. In both experiments, focal attention was manipulated either by a peripherally presented onset precue (Experiment 1) or by a centrally presented symbolic precue (Experiment 2). Results showed that the Simon effect was substantially reduced in both experiments when a valid precue preceded the imperative stimulus just in time to conclude refocusing of attention to the position of the imperative stimulus before it was presented. However, conditions with neutral precues yielded a normally sized Simon effect. In both experiments, the Simon effect decreased as the SOA grew when the precue was valid. At least for the Simon effect, the results can be interpreted as evidence that relative spatial coding is functionally related to the position of the focus of attention.     

The percentage bend correlation coefficient

A well-known result is that the usual correlation coefficient,, is highly nonrobust: very slight changes in only one of the marginal distributions can alter by a substantial amount. There are a variety of methods for correcting this problem. This paper identifies one particular method which is useful in psychometrics and provides a simple test for independence. It is not recommended that the new test replace the usual test ofH ₀: = 0, but the new test has important advantages over the usual test in terms of both Type I errors and power.     

The Role of Asymmetrical Coding of Duration Samples in Producing the Choose-Short Effect in Pigeons

Pigeons were trained on two independent matching-to-duration-samples tasks; one involved 2- and 10-s durations and color choice stimuli, and the other involved 4.5- and 22.5-s durations and line choice stimuli. Accuracy was above chance on mixed-choice probes in which either of the short-duration samples was followed by the two short-associated stimuli. Following explicit training on mixed-choice trials involving choice between the two short- and the two long-associated stimuli, a choose-short effect was demonstrated with both sets of duration samples. These findings are inconsistent with the possibility that the choose-short effect reflects processes of asymmetrical-sample coding and default responding.     

USING THE UNMATCHED COUNT TECHNIQUE (UCT) TO ESTIMATE BASE RATES FOR SENSITIVE BEHAVIOR

Many areas of personnel research are "sensitive." We provide an empirical assessment of the unmatched count technique (UCT) to determine the base rate for a number of proscribed behaviors for professional auctioneers. To our knowledge, this is the first empirical application of a UCT technique in organizational studies. Advantages of the UCT are discussed including: (a) a more accurate estimate of the base rates for sensitive behavior, (b) absolute anonymity to subjects, (c) "legal immunity" to the researcher, and (d) facilitation of complete disclosure to subjects with no deception.     

Eye-hand coordination: spatial localization after saccadic and pursuit eye movements

Subjects produced speeded and unspeeded hand movements to a target location after either saccadic or pursuit eye movements to the target. Hand movements began either aligned with the initial position of gaze or from some other location. Subjects generally underestimated the extent of the pursuit eye movements relative to estimates made after saccades. With speeded hand movements, however, the underestimation was reduced considerably if the hand movements began aligned with a location other than the initial position of gaze. The results reveal details of the mechanisms underlying eye-hand coordination and show that important differences exist in the information used for localization for slow and rapid limb movements.     

Varying the temporal placement of a drinking opportunity in a fixed-interval schedule.

Three rats, lever pressing for food delivered on a fixed-interval 128-s schedule, were presented with a 16-s opportunity to drink from a retractable water source. The temporal placement of the water probe within the reinforcement cycle was varied sequentially, in steps of 16 s. Although the lever-pressing pattern was modulated by the intercalated water probe, water consumption during the probe itself was a decreasing function of time from the following reinforcer. These results were interpreted as evidence against the notion that schedule-induced drinking is a "ubiquitous" phenomenon and are congruent with results from other "intruded stimulus" experiments.     

EFFECTS OF MULTIPLE ADMINISTRATIONS OF THE MMPI FOR EMPLOYEE SCREENING

Psychological screening has become commonplace in a number of occupational groups. With the growing popularity of screening and the relative scarcity of appropriate personality measures, re-screening individuals with the same inventory is frequent. This paper examines the effect of re-screening with the Minnesota Multiphasic Personality Inventory (MMPI) on contract workers (n = 1,997) from the nuclear power industry. Participants completed the Inventory as a part of a routine screening procedure. Each participant provided several profiles as a result of regular employment cycles. Although the differences are generally small, some scales show large enough mean changes to warrant concern when interpreting the profiles of those who have taken the profile multiple times. Although scale reliabilities tend to increase, the usefulness of the Inventory appears to decrease with an increasing number of administrations. The effect is one of increasing normality of test profiles. One interpretation of the results is that candidates for jobs become "test-wise," and the scores are the result of a combination of responses to the repeated assessment. It becomes increasingly difficult to identify unfit employees with the Inventory. Given these results, further research on retesting effects of the Inventov, as well as other personality measures, is indicated.