Organization tenure as a moderator of the job satisfaction-job performance relationship

Organization tenure as a moderator of the job satisfaction-job performance relationship was examined with data from a sample of 116 technical employees in a medium-sized industrial firm. Results provide support for a moderating influence of organization tenure on the relationship between job performance and overall satisfaction, satisfaction with work, and satisfaction with supervision.     

Taste-mediated potentiation of noningestional stimuli in rats

Holtzman rats drank saccharin in a distinctive environmental chamber prior to lithium-induced toxicosis. This treatment was administered four times. These animals subsequently drank less water or familiar saline in the chamber than animals which received water in the environment during conditioning. In addition, these environmental stimuli blocked the formation of a lithium-mediated coffee aversion more if they were conditioned in the presence of saccharin than if they were conditioned in the presence of water. Such differential blocking provided further evidence that the presence of a taste during conditioning facilitated aversion learning to the environmental chamber.     

The mental effort requirement of cumulative rehearsal: A developmental study

Three experiments were conducted examining the relationship between the mental effort requirement of cumulative rehearsal and spontaneous utilization of the strategy by children. Mental effort was assessed by measuring the interference produced by cumulative rehearsal with a simultaneously performed secondary task (finger-tapping). It was found in Experiment 1 that second- and third-grade children experienced significantly more finger-tapping interference during instructed cumulative rehearsal than did sixth-grade children, an effect which, Experiment 2 demonstrated, could not be attributed simply to developmental differences in time-sharing performance. In Experiment 3 it was found that, for children in grades 2 through 5, rehearsal set size during spontaneous rehearsal was negatively correlated with amount of finger-tapping interference during instructed cumulative rehearsal, suggesting that spontaneous use of a cumulative rehearsal strategy was negatively correlated with the mental effort requirement of strategy use. These findings support the view that the mental effort requirement of strategy use may influence children's strategy selection on memory tasks.     

Facial and autonomic manifestations of the dimensional structure of emotion

While subjects viewed and rated a series of 25 emotionally evocative slides, their heart rate and skin conductance were continuously monitored and their facial expressions were covertly videotaped. Judges subsequently viewed the videotapes and rated trial-by-trial the pleasantness and intensity of each subject's facial expressions. Both phasic skin conductance responding and judged facial intensity were curvilinearly related to self-reported pleasantness, with the largest responses occurring at both extremes of the self-report scale. In contrast, phasic cardiac reactions and judged facial pleasantness were linearly related to self-reported pleasantness; extreme pleasantness was accompanied by heart rate acceleration, and unpleasantness by cardiac deceleration. The results suggest that visceral information reflects the dimensions that underlie the organization of affects and, hence, may play a more important role in emotional experience than is assumed in a number of currently held theories of emotion.     

The nature and structure of infant form categories

The nature of form categories in 3 to 4-month infants was studied using the visual preference for novelty in the familiarization-novelty paradigm. Novelty preference indicates habituation to and recognition of the familiar. In a series of experiments employing three form categories composed of dot patterns, generalized habituation to new category members was used to assess categorization behavior in the recognition of visual forms. At 3 to 4 months of age, infants did not initially show any systematic preferences for “good” or symmetrical examples of a category relative to “distorted” examples (Experiment 1) and this was true for all three form categories used (i.e., square, triangle, and diamond). Evidence for categorization was seen in the recognition performance of 3- to 4-month infants (Experiment 2). Infants showed generalized habituation to the previously unseen category prototypes following exposure to six exemplars within each of the three form categories. Given evidence that infants could discriminate between the prototype and other category members (Experiment 3), “inability to discriminate” was ruled out as an explanation for this form categorization or generalized habituation effect. Four subsequent experiments were conducted to determine whether infants exhibit a prototypicality structure for their remembered categories and whether certain conditions which have been shown to enhance prototypicality effects with adults have similar effects with infants. No evidence of a prototypicality structure was found for the form categories of infants when the number of exemplars during familiarization was limited to 6 and the test for form recognition followed immediately (Experiment 4). However, a prototypicality structure for the remembered form categories was found when a 3-min delay was introduced between familiarization and tests for form recognition (Experiment 5), when 12 exemplars were presented during familiarization (Experiment 7), or when the prototype was included as one of the six exemplars during the familiarization period (Experiment 6).     

Therapy for helpless monkeys

During the course of pilot studies and two formal experiments examining the learned-helplessness phenomenon in rhesus monkeys, 5 subjects failed to escape in a shuttlebox following earlier experience with aversive stimulation in primate-restraining chairs. The present report details a therapeutic manipulation designed to reverse these subjects' maladaptive behavior in the shuttlebox. Introduction of a different fear stimulus (a net previously used to restrain the animals) was found to be effective in inducing shuttlebox escape and avoidance learning. The implications of the present findings for an understanding of the learned-helplessness phenomenon and their relevance to therapy for human depression are discussed.     

Contiguity and contingency in the acquisition and maintenance of an operant

Three experiments compared the effects of nondifferential and differential reinforcement of response location on a circular dimension. Rats were required to operate a vertical joystick to produce food. When food was delivered immediately after responses, but independent of response location, the spatial concentration of responding was low and no progressive changes were observed. Traditional and percentile schedules of differential reinforcement for response location produced highly reliable acquisition of spatially concentrated responding. Once concentrated responding had been established, nondifferential reinforcement was sufficient to maintain it in some subjects. Since only the differential reinforcement schedules established a contingency with respect to response location, it was concluded that this relationship was necessary for acquisition, but that response-reinforcer contiguity may be sufficient for maintenance. This conclusion is consistent with the view that operant conditioning is a contiguity-based process, but that contingencies are required to produce reliable contiguity between reinforcers and particular responses.     

Tail-pinch hyperalgesia and analgesia: Test-specific opioid and nonopioid actions

Reactivity to noxious stimuli in rats is altered following acute exposure to tail-pinch. However, while our laboratory has reported that tail-pinch produces hyperalgesia as measured by the flinch-jump test and attenuates analgesic responses following morphine and cold-water swims, others have found that tail-pinch elicits an opioid-sensitive analgesia on the hot plate test and a nonopioid-sensitive analgesia on the writhing test. The first experiment of the present study examined whether tail-pinch altered responses on two somatic pain tests and showed that tail-pinch significantly decreased both jump thresholds and tail-flick latencies. In assessing whether tail-pinch hyperalgesia on the jump test was mediated by endogenous opioids, the second experiment indicated that low (0.1 and 0.5 mg/kg) doses of naloxone eliminated tail-pinch hyperalgesia by selectively lowering control thresholds and a high (10 mg/kg) dose of naloxone eliminated tail-pinch hyperalgesia by selectively increasing thresholds following tail-pinch. Further, the third experiment showed that morphine-tolerant rats (10 mg/kg morphine daily over 14 days) did not exhibit tail-pinch hyperalgesia on the 15th day, an effect attributable to a selective lowering of control thresholds. The fourth experiment was a direct replication of the observation that tail-pinch produces analgesia on the writhing test which is not antagonized by naloxone. These results demonstrate that the pain test employed and the amount of prior tail-pinch experience are critical variables in determining the direction of tail-pinch effects upon pain perception in rats.     

Silent reading: Insights from second-generation deaf readers

Previous studies indicate that hearing readers sometimes convert printed text into a phonological form during silent reading. The experiments reported here investigated whether second-generation congenitally deaf readers use any analogous recoding strategy. Fourteen congenitally and profoundly deaf adults who were native signers of American Sign Language (ASL) served as subjects. Fourteen hearing people of comparable reading levels were control subjects. These subjects participated in four experiments that tested for the possibilities of (a) recoding into articulation, (b) recoding into fingerspelling, (c) recoding into ASL, or (d) no recoding at all. The experiments employed paradigms analogous to those previously used to test for phonological recoding in hearing populations. Interviews with the deaf subjects provided supplementary information about their reading strategies. The results suggest that these deaf subjects as a group do not recode into articulation or fingerspelling, but do recode into sign.