Essentialist theory of ‘hybrids’: From animal kinds to ethnic categories and race

This article presents a theory of the perception of hybrids, resulting from cross‐breeding natural animals that pertain to different species and of children parented by couples with a mixed ethnic or racial background. The theory states that natural living beings, including humans, are perceived as possessing a deeply ingrained characteristic that is called ‘essence’ or ‘blood’ or ‘genes’ in everyday discourse and that uniquely determines their category membership. If, by whatever means, the genes or essences of two animals of different species are combined in a hybrid, the two incompatible essences collapse, leaving the hybrid in a state of non‐identity and non‐belonging. People despise this state and reject the hybrid (Study 1). This devaluation effect holds with cross‐kind hybrids and with hybrids that arise from genetically combining animals from incompatible habitats across three cultures: Austria, India and Japan (Study 2). In the social world, groups and ethnic or racial categories frequently are essentialized in an analogue way. When people with an essentialist mindset judge ethnically or racially mixed offspring, they perceive a collapse of ethnic or racial essence and, consequently, denigrate these children, as compared to children from ‘pure’ in‐group or out‐group parents (Study 3). The findings are discussed in terms of the widespread ‘yuck factor’ against genetically modified animals, in terms of the cultural concepts of monstrosity and of racism and prejudice.     

Drivers’ propensity to have different types of intelligent speed adaptation installed in their cars

The aim of the present study was to examine if there are differences in drivers’ propensity to have different types of intelligent speed adaptation installed in their cars depending on the sample of drivers (i.e. Swedish or Turkish), their aberrant driving behaviours (i.e. violations and errors), and/or the technical solution used (i.e. speed limit information, advisory, supportive and intervening systems). A sample of 224 Swedish and 316 Turkish drivers completed a questionnaire including questions based on the driver behaviour questionnaire (DBQ) as well as questions about the drivers’ propensity to have different types of intelligent speed adaptation installed in their cars. The results showed that the Swedish sample of drivers was less positive than the Turkish sample of drivers towards having the advisory, supportive and intervening systems installed. Furthermore, drivers who frequently commit violations were less positive towards having any of these systems installed than were drivers who commit violations less frequently, while drivers who frequently make errors were more positive towards having the systems installed than were drivers who make errors less frequently. Both the Swedish and the Turkish sample of drivers were most positive towards having the speed limit information system installed, followed by the advisory system on second place, the supportive system on third place and lastly the intervening system on fourth place.     

Moral Motivation Pluralism

Motivational externalists and internalists of various sorts disagree about the circumstances under which it is conceptually possible to have moral opinions but lack moral motivation. Typically, the evidence referred to are intuitions about whether people in certain scenarios who lack moral motivation count as having moral opinions. People’s intuitions about such scenarios diverge, however. I argue that the nature of this diversity is such that, for each of the internalist and externalist theses, there is a strong prima facie reason to reject it. That much might not be very controversial. But I argue further, that it also gives us a strong prima facie reason to reject all of these theses. This is possible since there is an overlooked alternative option to accepting any of them: moral motivation pluralism, the view that different internalist and externalist theses correctly accounts for different people’s concepts of moral opinions, respectively. I end the paper with a discussion of methodological issues relevant to the argument for moral motivation pluralism and of the consequences of this view for theories about the nature of moral opinions, such as cognitivism and non-cognitivism.     

Do Inferences about Age Differences in Emotional Experience Depend on the Parameters Analyzed?

Age differences in emotional experience are assessed through self-report scales or questionnaires referring to a specific period of varying length, and examining different parameters of emotional response. A recent meta-analysis suggests that the type of instrument and parameter used could account for some of the inconsistencies in the results. The present study shows comparisons between emotional experience in samples of younger (N = 120, aged 20–27) and older (N = 103, aged 55–75) participants. An Emotional Self-Monitoring record was administered every day for a week. The results show that emotional expression was highly stable over time. However, they also show that some theoretical assumptions about individual age differences in emotional experience and age depend on the parameters on which the analysis is based (occurrence, frequency and intensity, and emotional balance).     

Non-linearity,Complexity and Limited Measurement in the Relationship Between Satisfaction with Specific Life Domains and Satisfaction with Life as a Whole

In this article we defend that the adoption of a non-linear approach, theoretically framed on complexity theories can make some contribution to the bottom-up approach, which explains the levels of satisfaction with life as a whole through the combination of the levels of satisfaction in different life domains. Two approaches have been tested: (Rojas in J Happiness Stud 7:467–497, 2006) constant elasticity of substitution model and the model with quadratic terms and interaction effects (González et al. in Soc Indic Res 80:267–295, 2006; González et al. in Qual Quant 42:1–21, 2008). In order to prevent obtaining false non-linear relationships they have been analysed twice taking into account or not limited measurement of satisfaction with life as a whole. Results show that: (a) any of the two non-linear models fits better than the linear one; (b) any of the models failing to take into account limited measurement fits worse; (c) the non-linear model with quadratic terms and interaction effects fits better than Rojas’. The implications for the study of psychological well-being are discussed.     

Tits use amodal completion in predator recognition: a field experiment

Amodal completion enables an animal to perceive partly concealed objects as an entirety, and to interact with them appropriately. Several studies, based upon either operant conditioning or filial imprinting techniques, have shown that various animals (both mammals and birds) can perform amodal completion. Before this study, the use of amodal completion by untrained animals in the recognition of objects had not been considered. Using two feeders, we observed in a field experiment the reaction of tits to the torso of a sparrowhawk (partly occluded or an ‘amputated’ dummy) in two different treatments (sparrowhawk torso vs. complete dummy pigeon; and torso vs. complete dummy sparrowhawk). It is clear that the birds considered the two torso variants as predators and kept away from both of them when the second feeder offered a ‘pigeon’ instead. On the other hand, when a ‘complete sparrowhawk’ was present on the second feeder, the number of visits to the occluded torso remained low; while the number of visits to the amputated one increased threefold. Birds risked perching near what was clearly an amputated torso; while the fear of a “hiding” (occluded) torso remained unchanged, when the second feeder did not provide a safe alternative. Such discrimination between torsos requires the ability for amodal completion. Our results demonstrate that in their recognition process, the birds not only use simple sign stimuli, but also complex cognitive functions.     

Income,Motivation, and Satisfaction with Life: An Empirical Analysis

This paper focuses on how different types of motivations can condition satisfaction with life, studying whether individual heterogeneity in motivations affects the relationship between income and life satisfaction and whether the relationship between motivation and satisfaction differs for people in different income-groups. Data used in this study comes from the World Values Survey and the focus is placed on the relationship between income, motivation and satisfaction with life. Once variables such as gender, age, religion, health or education are controlled for, we find that different motivations significantly affect individual wellbeing. Moreover, our results suggest that moving from extrinsic to intrinsic motivation leads individuals to enjoy greater satisfaction with life. This is so independent of the level of income, but the role of intrinsic motivation is particularly significant for people in the low-income class. Life satisfaction also increases, within extrinsic motivation, when moving from importance placed on a good income to focusing on security and, within intrinsic motivation, when moving from emphasis placed on social relatedness to an increased feeling of accomplishment. Overall, our results suggest that different goals and intended outcomes condition individual’s perceptions of wellbeing, with intrinsic motivations being crucial in attaining greater levels of satisfaction with life.     

Learning of magnetic compass directions in pigeons

A proof of magnetic compass learning by pigeons under laboratory conditions has been attempted for decades, but all experiments have failed so far. The aim of the present study was to test whether pigeons can learn magnetic compass directions in an operant chamber if magnetic cues are presented as true spatial cues. Experimental sessions were carried out in the local geomagnetic field and in magnetic fields with matched total intensity and inclination, but different directions generated with Helmholtz-coils. Birds demonstrated successful learning with a performance level comparable to that in learning studies with magnetic anomalies. In addition, we compared the data from magnetic learning in the laboratory with performance from homing experiments in the field. The birds that were more successful in the learning experiment had vanishing bearings farther away from the home direction than the group mean at unfamiliar, but not at familiar sites. This might suggest that better learners explore unknown locations in a different way. Our findings represent the first evidence for operant magnetic compass learning in pigeons and also provide a link between behavioural data from the field and the laboratory.     

A new device to present textured stimuli to touch with simultaneous EEG recording

The study of touch has recently grown, due mainly to the extensive use of several types of actuators that stimulate several subsystems of touch. There is a widespread interest in applying these mechanisms to the study of the neurophysiological correlates of tactual perception. In this article, we present a new device (the tactile spinning wheel [TSW]) for delivering textured surfaces to the finger pad. The TSW allows one to control several parameters of the stimulation (angular speed, texture, etc.) and, connected to an EEG recording system, makes it possible to study neural electrophysiological events. The device consists of a rotating platform on which the tactile stimuli are fixed, a system that synchronizes stimuli onset with the EEG system, and an electronic interface that controls the platform. We present the technical details of the TSW, its calibration, and some experimental results we have obtained with this device.     

Hallucinations for disjunctivists

In this paper, I examine the so-called disjunctive views on hallucinations. I argue that neither of the options open to the disjunctivist is capable of accommodating basic phenomenological facts about hallucinatory experiences and the explanatory demands behind the classical argument from hallucination. A positive characterization of the hallucinatory case is not attractive to a disjunctivist once she is disposed to accept certain commonalities with veridical experiences. Negative disjunctivism glosses the hallucinatory disjunct in terms of indiscriminability. I will argue that this move either renounces to characterize phenomenally the hallucinatory experience or does not take seriously questions about why indiscriminability is possible in the phenomenal realm.