Social Comparison and Information Transmission in the Work Context

In the workplace, people can experience various types of failure and frustrations resulting in spontaneous social comparisons with other colleagues who are more (upward comparison) or less (downward comparison) successful. Upward comparisons especially have been shown to increase envy toward the outperforming benchmark colleague, which could negatively affect social interaction with this colleague. In line with this, our results consistently show that upward comparisons are associated with higher levels of experienced envy, as well as with a lower transmission rate of high-quality information. By contrast, type of social comparison had no impact on the amount of transmitted low-quality, work-relevant information. Theoretical and practical implications are discussed.     

Language comprehension and dominant hand motion simulation

In five experiments participants were presented with pairs of nouns and verbs. They were asked to decide whether the combinations made sense or not. Half of the participants responded "yes" with the dominant hand, half with the left hand. When pairs referred to manual and mouth actions, participants responded faster with the dominant than with the left hand with sensible sentences. When pairs referred to manual and foot actions the result was opposite. Results suggest that language processing activates an action simulation that is sensitive to both the effector involved and the goal expressed by the sentence.     

Cognitive models of choice: comparing decision field theory to the proportional difference model

People often face preferential decisions under risk. To further our understanding of the cognitive processes underlying these preferential choices, two prominent cognitive models, decision field theory (DFT; Busemeyer & Townsend, 1993 ) and the proportional difference model (PD; González-Vallejo, 2002 ), were rigorously tested against each other. In two consecutive experiments, the participants repeatedly had to choose between monetary gambles. The first experiment provided the reference to estimate the models' free parameters. From these estimations, new gamble pairs were generated for the second experiment such that the two models made maximally divergent predictions. In the first experiment, both models explained the data equally well. However, in the second generalization experiment, the participants' choices were much closer to the predictions of DFT. The results indicate that the stochastic process assumed by DFT, in which evidence in favor of or against each option accumulates over time, described people's choice behavior better than the trade-offs between proportional differences assumed by PD.     

Flexible cue use in food-caching birds

An animal’s memory may be limited in capacity, which may result in competition among available memory cues. If such competition exists, natural selection may favor prioritization of different memory cues based on cue reliability and on associated differences in the environment and life history. Food-caching birds store numerous food items and appear to rely on memory to retrieve caches. Previous studies suggested that caching species should always prioritize spatial cues over non-spatial cues when both are available, because non-spatial cues may be unreliable in a changing environment; however, it remains unclear whether non-spatial cues should always be ignored when spatial cues are available. We tested whether mountain chickadees (Poecile gambeli), a food-caching species, prioritize memory for spatial cues over color cues when relocating previously found food in an associative learning task. In training trials, birds were exposed to food in a feeder where both spatial location and color were associated. During subsequent unrewarded test trials, color was dissociated from spatial location. Chickadees showed a significant pattern of inspecting feeders associated with correct color first, prior to visiting correct spatial locations. Our findings argue against the hypothesis that the memory of spatial cues should always take priority over any non-spatial cues, including color cues, in food-caching species, because in our experiment mountain chickadees chose color over spatial cues. Our results thus suggest that caching species may be more flexible in cue use than previously thought, possibly dependent upon the environment and complexity of available cues.     

Levels of Emotional Awareness Scale (LEAS)

Guided by the idea that alexithymia and other psychopathological phenomena are connected with decreased sensitivity to internal emotional states, Lane and Schwartz (1987) presented a cognitive-developmental theory describing different “Levels of Emotional Awareness”. In 1990, Lane et al. developed a performance measure to identify different states of sensivity to internal emotional states, the “Levels of Emotional Awareness Scale” (LEAS). Subjects are asked to describe anticipated own feelings and those of another person in 20 scenes in a short written answer. We present the results of a study using the German version of the LEAS, the 20-item-version of the Toronto Alexithymia-Scale (TAS 20) and the state-version of the State-Anxiety-Inventory (STAI) on 338 Students of medicine of the Cologne university. The study is discussed with regard to a similar study conducted in the USA (Lane et al. 1996). Theoretical background and psychometric charateristics of the LEAS are related to actual trends in research on alexithymia.