CATECHOLAMINE EXCRETION, PERFORMANCE, AND SUBJECTIVE STRESS

Psycho-endocrine relations were explored in 52 students exposed to moderately stressful psychological tests demanding selective attention. Subjects with high excretion rates of adrenaline performed better during the entire stress session than did subjects with low adrenaline excretion. The level of subjective stress increased consistently throughout the session in subjects with low excretion rates of adrenaline, while it remained relatively constant in subjects with high adrenaline excretion. No consistent relationship could be demonstrated between noradrenaline excretion and the psychological variables. Possible effects on the catecholamine-excretion patterns of factors such as severity and duration of the stress are discussed.     

SUBJECTIVE TIME AS AFFECTED BY GRAVITATIONAL STRESS

Subjective time as affected by positive radial acceleration in a human centrifuge was studied by a modification of the method of ratio production. Auditory signals (1–20 sec.) were used as stimuli. The results showed a marked change in subjective time during gravitational stress. Subjective time, as measured by the methods employed, was a positively accelerated function of objective time and the positive acceleration was enhanced during centrifugation. The demonstrated change in time experience was caused by a difference in retention of preceding time intervals, retention being impaired during centrifugation.     

WORK LOAD, TENSION, AND COPING: MODERATING EFFECTS OF SUPERVISOR SUPPORT

This research investigated the buffering role of social support in the relationship of work load to both tension-anxiety and coping for police radio dispatchers ( N = 60). Each dispatcher was observed throughout an entire 8-hour work shift by a trained observer. Objective load consisted of the hourly rate of incoming telephone calls, police radio transmissions, and face-to-face or written communications from superiors, co-workers, and others. At the end of each shift, measures were taken of dispatchers' perceived load, felt tension-anxiety, and coping actions. Hierarchical regression revealed that support from superiors moderated the effects of both objective and perceived loads; no main effects of support were found. Statistically significant interactions confirmed the hypothesized buffering role of support: under high perceived load, dispatchers with high social support engaged in more coping actions and felt less tension-anxiety than did low-support dispatchers. No differences were found when perceived load was low. Support also buffered effects of objective load on tension-anxiety but not on coping.     

A META-ANALYSIS OF WORK DEMAND STRESSORS AND JOB PERFORMANCE: EXAMINING MAIN AND MODERATING EFFECTS

We quantitatively integrated 169 samples ( N = 35,265 employees) that have been used to investigate the relationships of the following 7 work-related stressors with job performance: role ambiguity, role conflict, role overload, job insecurity, work–family conflict, environmental uncertainty, and situational constraints. Overall, we obtained a negative mean correlation between each job performance measure and each stressor included in our analyses. As hypothesized, role ambiguity and situational constraints were most strongly negatively related to performance, relative to the other work-related stressors. Analysis of moderators revealed that (a) the negative correlation of role overload and performance was higher among managers relative to nonmanagers; (b) publication year moderated the relation of role ambiguity and role overload with performance, although in opposite directions; (c) the correlations obtained for published versus unpublished studies were not significantly different; and (d) using the Rizzo et al. scale of role ambiguity and role conflict decreased the magnitude of the correlations of these stressors with performance, relative to other scales. Theoretical contributions, future research directions, and practical implications are discussed.     

DAILY WORK STRESS AND ALCOHOL USE: TESTING THE CROSS-LEVEL MODERATION EFFECTS OF NEUROTICISM AND JOB INVOLVEMENT

Employee alcohol use has been shown to be prevalent and have potential detrimental effects for both employees' health and work outcomes. In this study, we used a daily telephone interview to investigate the relationships between work stress and alcohol use in a sample of Chinese workers. The results from multilevel modeling showed that daily work stress was significantly related to daily alcohol use and desire to drink. Further, there were significant interindividual variations in the work stress–alcohol use/desire to drink relationships that were predicted by neuroticism and job involvement. Both theoretical and practical implications of this study are discussed.     

TIME RELATIONS OF OBJECTIVE AND SUBJECTIVE REACTIONS TO D-AMPHETAMINE AND PENTOBARBITONE

Successive measurements of pulse rate, blood pressure, objective and subjective reaction speed, and six mood variables were made on 12 healthy subjects during 135 min. periods following the intake of either 15 mg d-amphetamine, 200 mg Pentobarbitone, or a placebo. It was shown that (1) the two drugs had essentially opposite effects on all objective and most subjective variables; (2) after d-amphetamine subjective effects appeared earlier and reached their maximum more rapidly than objective effects; (3) both types of reaction were less pronounced after Pentobarbitone than after d-amphetamine under the present dose conditions; and that (4) after Pentobarbitone maximum objective effects were attained at an earlier point in time.     

EFFECTS OF NITROUS OXIDE ON SUBJECTIVE AND OBJECTIVE VARIABLES

Effects of nitrous oxide in different subanaesthetic concentrations were studied in twelve subjects. Subjective scales of intoxication and of eight other mood variables were obtained by the method of magnitude estimation. Objective performance was examined by tests on memory and arithmetic. For most variables the dose-response curves obtained showed progressively larger effects with increasing dose-levels. At concentrations below 20 per cent the changes were, on the whole, very slight. The results are compared with similar data from an alcohol experiment.     

THE EFFECTS OF CHOICE AND TASK PREFERENCE ON THE WORK PERFORMANCE OF ADULTS WITH SEVERE DISABILITIES

We evaluated the effects of choice versus the assignment of tasks of varying preferences on the work engagement of adults with severe disabilities. The combined results of two experiments suggest that the relative preference for a task may be an important variable in the effectiveness of choice for some individuals.     

ON THE INTERCHANGEABILITY OF OBJECTIVE AND SUBJECTIVE MEASURES OF EMPLOYEE PERFORMANCE: A META-ANALYSIS

A meta-analysis of studies containing both objective and subjective ratings of employee performance resulted in a corrected mean correlation of .389. This value, although significantly greater than zero, indicates that objective and subjective performance measures should not be used interchangeably. Moreover, in no moderator subgroup examined did the correlation suggest convergent validity. After discussing issues related to resolving the previous anomalies of primary and meta-analytic results, a secondary analysis suggested that objective and subjective measures of the same construct at the same level may be used inter-changeably. The secondary analysis, however, was based on a very limited sample. Future research should address the appropriate dimensionality of employee performance.     

NOTE ON THE SUBJECTIVE SPEED OF MANUAL WORK

A preliminary experiment is described, in which the speed of three manual activities was estimated by the method of magnitude estimation. Within the rather narrow stimulus range of 1/1.35 the subjective range was 1/1.86 for card dealing, 1/1.64 for shoveling gravel, and 1/1.41 for packing. Tentative interpretations of these differences are discussed.     

EFFECTS OF CONTINGENCY CONTRACTING ON STUDY RATE AND TEST PERFORMANCE1

A contingency contracting program designed to increase study rate and subsequent test performance was implemented with a group of undergraduate psychology students. The function of the contingency contracting program in producing increased study rate was evaluated by individual experiments with each student in an experimental contracting group. The overall effect of the program on test performance was assessed by comparing the final scores for the course earned by the experimental group with those earned by two matched control groups. A reversal procedure established that contingency contracting did significantly increase the study rate of students of a wide range of ability. However, it was selectively effective in improving the test performance of below-average students only. Study rate gains in contracted courses did not generalize to noncontracted courses. Self-recording of study time in the absence of scheduled differential consequences did not improve test performance. Study rate under no-consequence conditions varied with test schedule. For both consequence and no-consequence groups, the correlation between study time and final score for the course was only moderate.     

EFFECTS OF CHOSEN VERSUS ASSIGNED JOBS ON THE WORK PERFORMANCE OF PERSONS WITH SEVERE HANDICAPS

We evaluated the effects of several choice-related variables on the work performance of adults with severe handicaps. After assessing client work preferences, three choice-related situations were presented: (a) providing clients with the opportunity to choose a work task, (b) assigning a preferred task, and (c) assigning a nonpreferred task. Results indicated that clients attended to work tasks almost twice as much when they chose their tasks and when assigned to work on preferred tasks versus when assigned to work on nonpreferred tasks. Results are discussed regarding the need to assess systematically the effects of choice-related variables.     

LONGITUDINAL STUDY OF PROCRASTINATION, PERFORMANCE, STRESS, AND HEALTH:

Abstract— Procrastination is variously described as harmful, innocuous, or even benefical. Two longitudinal studies examined procrastination among students. Procrastinators reported lower stress and less illness than nonprocrastinators early in the semester, but they reported higher stress and more illness late in the term, and overall they were sicker. Procrastination thus appears to be a self-defeating behavior pattern marked by short-term benefits and long-term costs.     

A COMPARISON OF VALIDATION CRITERIA: OBJECTIVE VERSUS SUBJECTIVE PERFORMANCE MEASURES AND SELF- VERSUS SUPERVISOR RATINGS

This study compared four criteria–two objective (production quantity and production quality) and two subjective (supervisor and self-ratings)–for their predictability in a criterion-related validity study. Results from this sample of 212 maintenance, mechanic, and field service workers replicated previous meta-analytic results with clerical workers (Nathan & Alexander, 1988); supervisor ratings and objective productivity indices provided similar and significant validity coefficients with a unit-weighted composite of five cognitive ability tests. The objective quality index and employee self-ratings resulted in near zero correlations with the same predictor battery. Additional productivity and quality objective criterion data were available for 2 years since the original validation study; no change in validity was found.     

THE PHYSIOLOGICAL MEASUREMENT OF WORK STRESS: A CRITIQUE

There has been considerable growth in the number of studies focused on the relationship between stress at work and a variety of physiological symptoms, especially cardiovascular irregularities, abnormal levels of biochemicals in the blood and urine, and gastrointestinal disorders. Many of these studies, however, have used inadequate procedures for measuring such symptoms. Consequently, the results and conclusions of these studies are often invalid or, at best, questionable. The purpose of this paper is to critique the prevailing procedures used in the measurement of physiological symptoms in work stress research and to suggest needed improvements.     

WORK ENGAGEMENT: A QUANTITATIVE REVIEW AND TEST OF ITS RELATIONS WITH TASK AND CONTEXTUAL PERFORMANCE

Many researchers have concerns about work engagement's distinction from other constructs and its theoretical merit. The goals of this study were to identify an agreed‐upon definition of engagement, to investigate its uniqueness, and to clarify its nomological network of constructs. Using a conceptual framework based on Macey and Schneider (2008; Industrial and Organizational Psychology, 1, 3–30), we found that engagement exhibits discriminant validity from, and criterion related validity over, job attitudes. We also found that engagement is related to several key antecedents and consequences. Finally, we used meta‐analytic path modeling to test the role of engagement as a mediator of the relation between distal antecedents and job performance, finding support for our conceptual framework. In sum, our results suggest that work engagement is a useful construct that deserves further attention.     

THE EFFECTS OF PARTICIPATION AND GOAL DIFFICULTY ON PERFORMANCE

Previous research comparing the effects of assigned versus participatively set goals on performance were essentially tests of the null hypothesis in that goal difficulty level was not systematically manipulated. The present laboratory study investigated the effects of assigned versus participatively set goals, and the effects of varying goal difficulty level on an arithmetic task. Eighty-six college students were assigned to either a participative goal condition or one of three assigned goal conditions. In two of the assigned goal conditions participants were assigned goals equal to those set in the participative condition, the difference being that individuals in one group were assigned goals at random and those in the other group were assigned goals on the basis of their premeasure scores. Participants in the third assigned goal condition were randomly assigned a goal in the top quartile of the goals set participatively. As hypothesized, individuals with hard assigned goals had higher performance than peers with lower goals set in a participative manner. Contrary to modern organizational theory, individuals with participatively set goals did not have higher performance than those with assigned goals of equal difficulty. Personality traits were not found to moderate the effects of goal setting on performance.     

RELATIONSHIP OF PERSONALITY TRAITS AND COUNTERPRODUCTIVE WORK BEHAVIORS: THE MEDIATING EFFECTS OF JOB SATISFACTION

This study used path analysis to test a model that posits that relevant personality traits will have both direct relationships with counterproductive work behaviors (CPBs) and indirect relationships to CPBs through the mediating effects of job satisfaction. Based on a sample ( n = 141) of customer service employees, results generally supported the hypothesized model for both boss- and self-rated CPBs. Agreeableness had a direct relationship with interpersonal counterproductive work behaviors (CPB-I); Conscientiousness had a direct relationship with organizational counterproductive work behaviors (CPB-O); and, job satisfaction had a direct relationship to both CPB-I and CPB-O. In addition, job satisfaction partially mediated the relationship between Agreeableness and both CPB-O and CPB-I. Overall, results show that personality traits differentially predict CPBs and that employees' attitudes about their jobs explain, in part, these personality–behavior associations.