Secondary memory and very rapid forgetting

Studies of recall in the absence of expectancy (e.g., Muter, 1980) have suggested that forgetting from primary memory is much more rapid than previously assumed. Two experiments examined the role of secondary memory, as reflected by encoding strategies, in determining this rate of forgetting. Experiment 1 demonstrated that the type of encoding specified by orienting tasks can influence recall in a traditional Brown-Peterson task. Experiment 2 demonstrated a similar pattern of effects of orienting task in the Muter task when recall was not expected, despite much more rapid forgetting. The type of encoding engaged by the orienting tasks did not account for Muter's results. Expectancy and orienting task appear to have separable influences on resource allocation during encoding. The presence of secondary memory influences at even the shortest retention interval indicates that forgetting from primary memory may be even more rapid than has been proposed.     

Combined action of diazepam and d-amphetamine on fixed-interval performance in cats

Cats trained under a fixed-interval 5-min schedule of milk presentation were injected with diazepam, amphetamine, and combinations of amphetamine and diazepam. Diazepam increased overall response rate as a function of the dose and disrupted the temporal pattern of responding. Low doses of amphetamine (0.5 mg/kg) usually increased the response rate; higher doses (1 to 2 mg/kg) either decreased the response rate or had little effect. Amphetamine always disrupted the temporal pattern of responding, even though it did not affect the overall rate. When doses of amphetamine that increased the response rate or left it unchanged were combined with diazepam, a potentiated increase in response rate occurred. When doses of amphetamine that decreased the response rate were combined with diazepam, the amphetamine-induced rate decreases were reversed at least partially. Less clear potentiation of disruption of the temporal pattern of responding was observed when amphetamine and diazepam were combined.     

On memory for metaphor

Three experiments investigated how metaphors are represented in memory and the effects on memory of variables known to affect metaphor comprehension. Ten theoretically relevant dimensions were examined. In Experiments 1 and 2, free recall across a variety of orienting tasks was consistently and positively predicted by the rated imageability of metaphoric topics (sentence subjects) and the rated number of interpretations for each metaphor. The number of interpretations effect was reversed in the cued recall task of Experiment 3, as metaphors with fewer interpretations were remembered better. These and other results supported previous suggestions that memory for metaphor involves wholistic representations akin to metaphoric grounds. They also revealed consistent differences in the roles of several variables in comprehension and memory for metaphor.     

A warning about millisecond timing in Turbo Pascal

It is shown that the “readkey“ function in Turbo Pascal 4.0 runs in cycles of about 40 msec, and thus must not be used to wait for a keyboard response in reaction time studies.     

Associative and categorical hypotheses of organization in the free recall of adults and children

Associative and categorical explanations for the organization children and adults display in free recall were tested. It was expected that young children would show output clustering as a function of associations between individual items within categories rather than relationship to the taxonomy itself. Kindergarten, fourth-grade, and tenth-grade subjects were presented with pictures representing the four factorial combinations of high and low interitem association and high and low category relatedness. Each set of pictures could be divided into four taxonomic categories of six items each. Kindergarteners displayed greater category clustering of highly associated items than weak associates. Older subjects showed sensitivity to both organizational dimensions. These data support a hypothesis that young children cluster in recall as a function of associations while older individuals show organizational flexibility which serves to facilitate greater recall.     

Which Is in Front of Chinese People,Past or Future? The Effect of Language and Culture on Temporal Gestures and Spatial Conceptions of Time

The temporal‐focus hypothesis claims that whether people conceptualize the past or the future as in front of them depends on their cultural attitudes toward time; such conceptualizations can be independent from the space–time metaphors expressed through language. In this paper, we study how Chinese people conceptualize time on the sagittal axis to find out the respective influences of language and culture on mental space–time mappings. An examination of Mandarin speakers' co‐speech gestures shows that some Chinese spontaneously perform past‐in‐front/future‐at‐back (besides future‐in‐front/past‐at‐back) gestures, especially when gestures are accompanying past‐in‐front/future‐at‐back space–time metaphors (Exp. 1). Using a temporal performance task, the study confirms that Chinese can conceptualize the future as behind and the past as in front of them, and that such space–time mappings are affected by the different expressions of Mandarin space–time metaphors (Exp. 2). Additionally, a survey on cultural attitudes toward time shows that Chinese tend to focus slightly more on the future than on the past (Exp. 3). Within the Chinese sample, we did not find evidence for the effect of participants' cultural temporal attitudes on space–time mappings, but a cross‐cultural comparison of space–time mappings between Chinese, Moroccans, and Spaniards provides strong support for the temporal‐focus hypothesis. Furthermore, the results of Exp. 2 are replicated even after controlling for factors such as cultural temporal attitudes and age (Exp. 3), which implies that linguistic sagittal temporal metaphors can indeed influence Mandarin speakers' space–time mappings. The findings not only contribute to a better understanding of Chinese people's sagittal temporal orientation, but also have additional implications for theories on the mental space–time mappings and the relationship between language and thought.     

Neural activity,neural connectivity,and the processing of emotionally valenced information in older adults: links with life satisfaction

This study examines whether differences in late-life well-being are linked to how older adults encode emotionally valenced information. Using fMRI with 39 older adults varying in life satisfaction, we examined how viewing positive and negative images would affect activation and connectivity of an emotion-processing network. Participants engaged most regions within this network more robustly for positive than for negative images, but within the PFC this effect was moderated by life satisfaction, with individuals higher in satisfaction showing lower levels of activity during the processing of positive images. Participants high in satisfaction showed stronger correlations among network regions—particularly between the amygdala and other emotion processing regions—when viewing positive, as compared with negative, images. Participants low in satisfaction showed no valence effect. Findings suggest that late-life satisfaction is linked with how emotion-processing regions are engaged and connected during processing of valenced information. This first demonstration of a link between neural recruitment and late-life well-being suggests that differences in neural network activation and connectivity may account for the preferential encoding of positive information seen in some older adults.     

You'd Better Ask an Expert: Mitigating the Comprehensibility Effect on Laypeople's Decisions About Science‐Based Knowledge Claims

Research shows that laypeople rely more on their capabilities to make decisions about science‐based knowledge claims after reading comprehensible compared with less comprehensible topic information. This can be problematic, because complex science‐based issues usually cannot be understood fully without experts' further advice. The present study investigated whether making readers aware of the ‘epistemic topic complexity’ of an issue (i.e., the extent of existing topic knowledge, the complexity of relationships between concepts, and the existence of multiple expert perspectives) can mitigate this influence of comprehensibility. Undergraduate students read comprehensible or less comprehensible health texts with topic knowledge being described as complex, uncomplex, or not described at all. They reported whether they agreed with the claim and would rely on their decision. Results showed that after reading comprehensible information, participants' reliance on their decision increased less when they considered topic knowledge to be complex. Practical implications of the findings are discussed. Copyright © 2014 John Wiley & Sons, Ltd.     

For whom and why organizational dehumanization is linked to deviant behaviours

‘We are humans not robots!’ This protest slogan denounces a working reality in which employees perceive that they are reduced to a mere tool or instrument at the service of the organization. Such an experience refers to organizational dehumanization. Researchers have recently indicated that organizational dehumanization may shape employee work behaviours. However, why, and for whom, organizational dehumanization leads to maladaptive work behaviours remains unclear in this literature. Drawing upon social exchange theory, we first propose that employees who experience organizational dehumanization engage in a reciprocity process by first developing thoughts of revenge that, in turn, materialize into more organizational deviance. We further argue that compliance buffers the indirect effect of organizational dehumanization on deviant behaviours via thoughts of revenge. Overall, the combined results of two experimental studies, a cross-sectional study and two three-wave studies provide strong evidence for our hypothesized relationships. Our research suggests that when experiencing organizational dehumanization, compliant employees are less likely to engage in a homeomorphic reciprocity in the exchange relationship with their organization.