How does cognition evolve? Phylogenetic comparative psychology

Now more than ever animal studies have the potential to test hypotheses regarding how cognition evolves. Comparative psychologists have developed new techniques to probe the cognitive mechanisms underlying animal behavior, and they have become increasingly skillful at adapting methodologies to test multiple species. Meanwhile, evolutionary biologists have generated quantitative approaches to investigate the phylogenetic distribution and function of phenotypic traits, including cognition. In particular, phylogenetic methods can quantitatively (1) test whether specific cognitive abilities are correlated with life history (e.g., lifespan), morphology (e.g., brain size), or socio-ecological variables (e.g., social system), (2) measure how strongly phylogenetic relatedness predicts the distribution of cognitive skills across species, and (3) estimate the ancestral state of a given cognitive trait using measures of cognitive performance from extant species. Phylogenetic methods can also be used to guide the selection of species comparisons that offer the strongest tests of a priori predictions of cognitive evolutionary hypotheses (i.e., phylogenetic targeting). Here, we explain how an integration of comparative psychology and evolutionary biology will answer a host of questions regarding the phylogenetic distribution and history of cognitive traits, as well as the evolutionary processes that drove their evolution.     

Overcoming action crises in personal goals – Longitudinal evidence on a mediating mechanism between action orientation and well-being

An action crisis is defined as an intra-psychic conflict between further goal pursuit and disengagement from the goal and frequently signifies the beginning of disengagement processes. By analyzing dispositional predictors of the development of goal-related action crises over time, we applied a process-based approach to goal disengagement. In two longitudinal studies, we evaluated the effect of action (vs. state) orientation on the development of action crises. Using change-regression models, the hypothesis could be confirmed that action orientation enables individuals to overcome action crises in personal goals. Furthermore, in two cross-sectional studies, previously reported effects of action orientation on health and well-being could be replicated and shown to be partially mediated by a decreased overall prevalence of action crises.     

The protean career orientation as predictor of career outcomes: Evaluation of incremental validity and mediation effects

A protean career orientation is assumed to be beneficial for career development but researchers have only recently started to empirically evaluate the concept. Conducting two studies based on three independent samples of university students and working professionals in Germany, we address issues of concurrent validity, predictive incremental validity and mechanisms linking the protean orientation to career outcomes. The first study showed that in a sample of 104 German employees different measures of the protean career orientation all correlated highly, but not identically, to a range of work and career attitudes. Using bootstrapping analysis, a second study with a six-month prospective examination among 419 German university students and a cross-sectional analysis among 526 German employees showed that a protean career orientation predicts proactive career behaviors and career satisfaction beyond a proactive disposition and core self-evaluations, respectively. Moreover, the protean career orientation was a significant mediator of these two personality constructs on both career outcomes. Cumulatively, the studies enrich our understanding of how and when a protean career orientation is related to important career outcomes.     

Career adaptivity,adaptability, and adapting: A conceptual and empirical investigation

The literature on career adaptation is vast and based on a range of different measurement approaches. The present paper aims to explore how different operationalizations of career adaptability in terms of concern, control, curiosity, and confidence are related from a conceptual and empirical standpoint. Based on a cross-sectional analysis with 1260 German university students, we established that the adaptability resources of concern, control, curiosity, and confidence are significantly related to, but empirically distinct from, measures representing adapting in terms of career planning, career decision-making difficulties, career exploration, and occupational self-efficacy. In a follow-up survey six months later, we found that the career adaptability dimensions partially mediated the effects of adaptivity (i.e., core self-evaluations and proactivity) on planning, decision-making difficulties, exploration, and self-efficacy. Interestingly, in both analyses, there was no clear match between adaptability resources and theoretically corresponding aspects of career adapting in terms of behaviors, beliefs, and barriers. The results suggest that psychological career resources in terms of concern, control, curiosity, and confidence partially mediate the effects of more context-general, trait-like adaptivity on different career-specific behavioral forms of adapting.     

Uniquely human self‐control begins at school age

Human beings have remarkable skills of self‐control, but the evolutionary origins of these skills are unknown. Here we compare children at 3 and 6 years of age with one of humans’ two nearest relatives, chimpanzees, on a battery of reactivity and self‐control tasks. Three‐year‐old children and chimpanzees were very similar in their abilities to resist an impulse for immediate gratification, repeat a previously successful action, attend to a distracting noise, and quit in the face of repeated failure. Six‐year‐old children were more skillful than either 3‐year‐olds or chimpanzees at controlling their impulses. These results suggest that humans’ most fundamental skills of self‐control – as part of the overall decision‐making process – are a part of their general great ape heritage, and that their species‐unique skills of self‐control begin at around the age at which many children begin formal schooling.     

Gamma activity in human EEG is related to highspeed memory comparisons during object selective attention

Among the most important processes of the brain in order to correctly perceive the outside world and act within it are binding, attention, and memory. All three functional mechanisms have been associated with brain activity in the gamma frequency range. It needs to be clarified, however, which subprocesses within the gamma frequency range relate to which perceptual or cognitive functions. In a visual discrimination task, we used Kanizsa figures whose constituent inducer disks need to be bound together to perceive the illusory contours. By a variation of the task requirements we manipulated the allocation of object selective attention as compared to a previous study. One out of four objects had to be detected. This detection process requires the comparison of two object dimensions (form and collinearity) with a working memory template. In order to get behavioural and electrophysiological measures, EEG and reaction times were recorded from 16 and 10 subjects, respectively. We demonstrated that the early evoked gamma activity reflects the process of allocating attention to a selected object as early as 50-150 ms after stimulus onset. We propose that the underlying mechanism is a high-speed memory comparison. In addition, we show that this early gamma activity also determines the reaction times needed to respond to the different stimuli.     

Religion without Metaphysics1

In this paper I will argue for a conception of religion that does not presuppose metaphysics in the traditional sense of the word. In a trivial sense we always have ideas of what is given and are all realists, living by our realist intuitions. But the philosophically crucial question is what conclusions can be reasonably drawn from this. In Part I, I will argue against metaphysical realism in general. In Part II, I will argue against its materialist challenge by showing in what sense it too can be conceived of as an example of metaphysical realism. In Part III, I will show why there is no point in defending or in arguing against religion en bloc. Finally in Part IV, I will argue for a conception of religion without metaphysics in the traditional sense by taking account of the existential function religion actually has in human life.     

Biases towards internal features in infants' reasoning about objects

This paper reports the results of two sets of studies demonstrating 14-month-olds' tendency to associate an object's behavior with internal, rather than external features. In Experiment 1 infants were familiarized to two animated cats that each exhibited a different style of self-generated motion. Infants then saw a novel individual that had an internal feature (stomach color) similar to one cat, but an external feature (hat color) similar to the other. Infants looked reliably longer when the individual's motion was congruent with the hat than when it was congruent with the stomach. Using a converging method involving object choice, Experiment 2 found that infants prioritized the internal feature over the external feature only when the object's behavior was self-generated. In the absence of self-generated behaviors, however, infants did not show a preference towards the internal feature.     

Gender,Age, and Rape-Supportive Rules

Social rules regarding sexual behavior indicate when sex may be desired, expected, or obligatory. Some of these rules legitimize a man's initiation of sex with a woman regardless of the woman's desires or intentions; such situations could potentially lead to rape. Middle school, high school, and university students completed a Rules About Sex Questionnaire on which they indicated the situations in which a man could assume a woman wants to have sex. The results indicated that girls and women endorsed fewer rules than did boys and men. University students endorsed the fewest rules, and middle school students endorsed the most rules. Endorsement of rules was associated with boys' and men's self-reported sexually coercive behavior and with beliefs about who should initiate sex. The findings may be useful in the design of sexual assault prevention programs for adolescents.     

Are self reports of memory failure accurate?

Previous research with memory questionnaires has been interpreted as showing that people do not recall their memory failures accurately. The present research consisted of three investigations that examined whether participants' reports of memory failures were corroborated by their spouses. These investigations used a greater variety of statistical and survey methods than were used in previous investigations. The results demonstrated that people are able to recall memory failures more accurately than previous research indicated. These results have important methodological and theoretical implications for basic and applied assumptions about what people know about their memory failures. Copyright © 2005 John Wiley & Sons, Ltd.