Locus of Control and Activity Level as Moderators in the Quantitative Job Demands—Satisfaction/ Psychological Anxiety Relationship: An Experimental Analysis

The present study examined the impact the quantitative job demands on satisfaction and psychological anxiety. In addition, the moderating effects of locus of control and activity level were examined. Consistent with the literature, perceptions of job demands were found to negatively affect satisfaction and positively affect psychological anxiety. Individuals reporting high activity levels had the strongest positive relationship between perceived job demands and psychological anxiety. Finally, external locus of control strengthened the negative relationship between perceived job demands and satisfaction. Results and social implications are discussed.     

The velten mood induction procedure: A methodological review

The Velten Mood Induction Procedure (1968) has been used extensively to induce elated and depressed moods in experimental subjects, and a wide range of psychological and behavioral effects have been studied following mood induction. This paper reviews experimental findings relating to the effectiveness of the Velten Mood Induction Procedure. Evidence is provided from 46 experiments concerning behavioral and self-report measures of assessment. Implications for the use of this procedure in mood induction research are discussed. It is concluded that the findings relating to the Velten procedure's effectiveness, and assessments of the contribution of demand characteristics to the procedure, are inconsistent and equivocal.     

Sex differences in behavioral and cognitive aspects of decision control

Sex differences in three components of decision control were examined in a series of studies utilizing 4-, 9-, and 14-year-old subjects. These components were actual decision control behavior, the cognitive understanding of the masculine or feminine nature of decision control, and the self-perception of decision control skills. At the behavioral level, boys controlled more decision outcomes than girls, especially at the oldest age grouping. In the area of self-perception, girls were less likely to perceive themselves as decision controllers compared to their male counterparts in the oldest age grouping. As far as general attitudes were concerned, neither boys nor girls equated decision control with masculinity. Results are discussed in terms of the socialization of powerlessness in women.     

Habituation at home

Habituation to mother's face in naturally occurring en face social interactions and to a single object in naturally occurring solitary play was studied in American and Japanese infants. Habituation was observed in both conditions in both samples, and home habituation data paralleled analogous laboratory habituation data both quantitatively and qualitatively.     

Memory for Duration: Role of Hippocampus and Medial Prefrontal Cortex

In this task rats had to learn that a three-dimensional object stimulus (a rectangle) that was visible for 2 s would result in a positive (go) reinforcement for one object (a ball) and no reinforcement (no go) for a different object (a bottle). However, if the rectangle stimulus was visible for 8 s then there would be no reinforcement for the ball (no go), but a reinforcement for the bottle (go). After rats learned this conditional discrimination by responding differentially in terms of latency to approach the object, they received large (dorsal and ventral) lesions of the hippocampus, lesions of the medial prefrontal cortex (anterior cingulate and precentral cortex), lesions of the cortex dorsal to the dorsal hippocampus, or served as sham-operated controls. Following recovery from surgery they were retested. The results indicate that there were major impairments following hippocampal lesions, in contrast to cortical control and medial prefrontal cortex lesions, as indicated by smaller latency differences between positive and negative trials on postsurgery tests. In order to ensure that the deficits observed with hippocampal lesions were not due to a discrimination problem, new rats were trained in an object (gray cylinder) duration discrimination task. In this go/no go procedure, the rats were reinforced for a 2-s exposure (duration) of the gray cylinder, but not a 10-s duration, or vice versa. The results indicate that after hippocampal lesions, there was an initial deficit followed by complete recovery. There were no significant changes for the medial prefrontal, cortical control, or sham-operated animals. It appears that the hippocampus, but not the medial prefrontal cortex, is actively involved in representing in short-term memory temporal attribute information based on the use of markers for the beginning and end of the presence (duration) of a stimulus (object).     

Beliefs About the Outcomes of Extramarital Sexual Relationships as a Function of the Gender of the “Cheating Spouse”

A person perception experiment was conducted toexamine people's beliefs about the outcome of anextramarital sexual relationship involving ahypothetical single friend and a married person. Twohundred and eleven undergraduate students (80 males and129 females; most of whom were Caucasian) were theparticipants in the experiment. The married person inthe vignette was presented as either a man or a woman (and always the opposite gender of the singlefriend) and as having low or high investments in themarriage (as indicated by number of children and yearsmarried). Results indicated that the participants' perceptions of the outcome of this type ofextramarital relationship depended on the gender of themarried person/single friend. Participants were morelikely to believe that the married person loved the extramarital partner, was committed to theextramarital relationship, and would marry theextramarital partner, if the married person was a womanrather than a man. The investment manipulations had noeffect on participants' perceptions of therelationship. The results were discussed as they relateto other beliefs about male vs. femalesexuality.     

Cry analysis detects subclinical effects of prenatal alcohol exposure in newborn infants

The threshold, latency, and peak fundamental frequency (basic pitch) of crying were sensitive to the subclinical effects of prenatal alcohol exposure through the first month of postnatal life. Whereas infants with prenatal alcohol exposure showed a lower cry pitch and higher cry threshold at 2 days of age, higher pitched cries, typical of nervous system insult, were evident at 14 and 28 days. A longer latency was also evident at 14 days.     

The nature and duration of adaptation following long-term odor exposure

Any individual living or working in an odorous environment can experience changes in odor perception, some of which are long lasting. Often, these individuals report a significant reduction in the perception of an odor following long-term exposure to that odor (adaptation). Yet, most experimental analyses of olfactory adaptation use brief odorant exposures which may not typify real-world experiences. Using a procedure combining long-term odor exposure in a naturalistic setting with psychophysical tests in the laboratory, we present evidence to show that reduced odor intensity following long-term exposure is accompanied by odorant-specific shifts in threshold. Subjects were exposed continuously to one of two odorants while in their home for a period of 2 weeks. Exposure produced an odorant-specific reduction in sensitivity and perceived intensity compared with preexposure baselines: Detection thresholds for the adapting odorant were elevated following exposure and perceived intensity ratings for weak concentrations were reduced. For most individuals, reduced sensitivity to the test odorant was still evident up to 2 weeks following the last exposure. The persistence of the change, as evidenced by the duration of recovery from adaptation, distinguishes this phenomenon from the adaptation seen following shorter exposures and highlights the need for the study of exposure durations that are more similar to real-world exposures.