Spatial navigation deficits in amnestic mild cognitive impairment with neuropsychiatric comorbidity

Aims: To find out whether neuropsychiatric comorbidity (comMCI) influences spatial navigation performance in amnestic mild cognitive impairment (aMCI).

Methods: We recruited aMCI patients with (n = 21) and without (n = 21) neuropsychiatric comorbidity or alcohol abuse, matched for global cognitive impairment and cognitively healthy elderly participants (HE, n = 22). They completed the Mini-Mental State Examination and a virtual Hidden Goal Task in egocentric, allocentric, and delayed recall subtests.

Results: In allocentric navigation, aMCI and comMCI performed significantly worse than HE and similarly to each other. Although aMCI performed significantly worse at egocentric navigation than HE, they performed significantly better than patients with comMCI.

Conclusions: Despite the growing burden of dementia and the prevalence of neuropsychiatric symptoms in the elderly population, comMCI remains under-studied. Since trials often assess “pure” aMCI, we may underestimate patients’ navigation and other deficits. This finding emphasizes the importance of taking account of the cognitive effects of psychiatric disorders in aMCI.     

Apathy or alienation? Political passivity among youths across eight European Union countries

Abstract

Political participation is one of the most studied aspects of the contemporary development of western democracies. A recent trend focuses the lack of political participation among younger generations. At the same time, the last decades have also witnessed a growth in the share of young European Union (EU) citizens who express alienation, and distrust toward social and political institutions at the national as well as the European level. By studying young people across different countries of the EU, the current study aims to examine if youths’ political passivity is better explained by political apathy or alienation. Our analyses are based on a comparative survey data collected by the Catch-EyoU project comprising approximately 4 454 late adolescents assembled from eight member countries of the EU. Results from logistic regressions predicting non-voting from apathy and alienation support the idea that political passivity is best understood as the result of political apathy. Moreover, it seems that the underlying separator of apathetic and alienated youths is cognitive awareness of political life. These results are discussed in relation to potentially built-in paradoxes of apathy present in efficient and well-functional welfare-state democracies.     

Dissecting the expanded cognitive reflection test: an item response theory analysis

This study presents a psychometric evaluation of the Expanded Cognitive Reflection Test (CRT7) based on item response theory. The participants (N?=?1204) completed the CRT7 and provided self-reported information about their cognitive styles through the Preference for Intuition and Deliberation Scale (PID). A two-parameter logistic model was fitted to the data to obtain the item difficulty and discrimination parameters of the CRT7. The results showed that the items had good discriminatory power (αs?=?.80 ? 2.92), but the range of difficulty was restricted (βs ranged from ?.60 to .32). Moreover, the CRT7 showed a pattern of correlations with the PID which was similar to that of the original CRT. When taken together, these results are evidence of the adequacy of the CRT7 as an expanded tool for measuring cognitive reflection; however, one of the newer items (the pig item) was consistently problematic across analyses, and so it is recommended that in future studies it should be removed from the CRT7.     

Daddy,daddy cool: stallion–foal relationships in a socially-natural herd of Exmoor ponies

Animal Cognition - Different forms of direct paternal investment have been described in mammals. One such species where paternal care was noticed, but remains poorly understood, is the horse (Equus...     

Difficulties,uncertainty, and opportunity: The experience of the COVID-19 pandemic by early to late adolescence in the Czech Republic

The pandemic created an unfamiliar situation for adolescents, especially within the school context. Drawing on the theory of cognitive appraisal, according to which people evaluate the benefit, harm, and threat of a certain event, this study explored Czech adolescents' experiences of the COVID-19 pandemic. We conducted six focus groups with early (11–12 years), middle (14–15 years), and late (18–19 years) adolescents. Using thematic analysis, we identified three themes—pandemic as difficulties, uncertainty, and a (un)seized opportunity. While some younger participants initially perceived the pandemic as exciting, others struggled immediately with isolation, online learning, and disrupted daily activities. The feelings of distressing uncertainty, but also the appraisal of the pandemic as an opportunity to utilize free time differently, which in some cases faded over time, prevailed among late adolescents. This study captured the effects of the pandemic and its appraisals on adolescents' subjective well-being and the shift in the thinking of early and late adolescents.     

Facial emotion recognition in violent men

The goal of this study was to explore the ability of violent men to recognise facial affect. In contrast to traditional approaches to this research question, we took the effects of the models' sex and different types of violent behaviour into consideration. Data obtained from 71 violent men revealed that they recognised facial expressions of fear (p = .019) and disgust (p = .013) more accurately when displayed by female than male models. The opposite was found for angry faces (p = .006), while the models' sex did not affect the recognition of sad, happy and surprised facial expressions or neutral faces. Furthermore, sexual coercion perpetrators were more accurate than other violent men in the recognition of female facial disgust (p = .006). These results are discussed in the context of social learning theory, and the hypothesis that female facial expressions of disgust could be subtle cues to their sexual infidelity that motivate sexual coercion in some men.     

Confinement has no effect on visual space perception: The results of the Mars-500 experiment

People confined to a closed space live in a visual environment that differs from a natural open-space environment in several respects. The view is restricted to no more than a few meters, and nearby objects cannot be perceived relative to the position of a horizon. Thus, one might expect to find changes in visual space perception as a consequence of the prolonged experience of confinement. The subjects in our experimental study were participants of the Mars-500 project and spent nearly a year and a half isolated from the outside world during a simulated mission to Mars. The participants were presented with a battery of computer-based psychophysical tests examining their performance on various 3-D perception tasks, and we monitored changes in their perceptual performance throughout their confinement. Contrary to our expectations, no serious effect of the confinement on the crewmembers’ 3-D perception was observed in any experiment. Several interpretations of these findings are discussed, including the possibilities that (1) the crewmembers’ 3-D perception really did not change significantly, (2) changes in 3-D perception were manifested in the precision rather than the accuracy of perceptual judgments, and/or (3) the experimental conditions and the group sample were problematic.     

The function debate: between “cheap tricks” and evolutionary neutrality

We examine the use of the notion of natural selection in the philosophical debate on functions in biology. This debate has been largely shaped by the way in which different accounts assess various selective pressures in justifying claims about biological functions. Cummins (Functions: new essays in the philosophy of psychology and biology. Oxford University Press, Oxford, pp 157–172, 2002), one of the main proponents of the causal role account of biological functions, argues that a correctly understood neo-Darwinian notion of natural selection has nothing to do with functional talk in biology. In this paper, we counter Cummins’ account by showing that progress in the molecular approaches to evolutionary biology—specifically scientific data available in neo-functionalization research—offers valuable support to the etiological selectionist approach to functions in biological and biologically-related sciences. Finally, we use the presented data to build our own account of biological functions, which tries to avoid the wrong turns taken by both major strands in the biological function debate, namely causal role and etiological accounts. According to our account, the function of a certain gene or a protein in the biological system that contains it is a particular causal activity, or a group of causal activities whose manifestation is in a specific way determined by corresponding mechanisms of genetic expression. Also, we argue that in many important cases this particular expression of genetic activity was positively selected at a certain point in evolutionary history. Since we take selection as an important but not the only factor that grounds biological functions, we are committed to a weak etiological account.