Are ants sensitive to the geometry of tunnel bifurcation?

The ability to orient and navigate in space is essential for all animals whose home range is organized around a central point. Because of their small home range compared to vertebrates, central place foraging insects such as ants have for a long time provided a choice model for the study of orientation mechanisms. In many ant species, the movement of individuals on their colony home range is achieved essentially collectively, on the chemical trails laid down by their nest mates. In the initial stage of food recruitment, these trails can cross each other and thus form a network of interconnected paths in which ants have to orient. Previous simulation studies have shown that ants can find the shortest path between their nest and a food source in such a network only if there is a bias in the branch they choose when they reach an asymmetrical bifurcation. In this paper, we studied the choice of ants when facing either a symmetrical or an asymmetrical bifurcation between two tunnels. Ants were tested either on their way to a food source or when coming back to their nest, and either in the presence or in the absence of a chemical trail. Overall, our results show that the choice of an ant at a tunnel bifurcation depends more on the presence/absence of a trail pheromone than on the geometry of the bifurcation itself.     

What ever happened to the norms for the Matching Familiar Figures Test?

The Matching Familiar Figures Test is used almost exclusively to assess cognitive tempo, e.g., impulsive-reflective, etc., in subjects. Although norms for this test were published by Salkind in 1978, a comprehensive review of the literature on cognitive tempo covering 1979 through 1984 showed only 8% of the reviewed studies used the norms. The problems associated with the failure to use norms, most notably, the inability to generalize findings from one sample to another, are covered.     

Are average and symmetric faces attractive to infants? Discrimination and looking preferences

Young infants prefer to look at faces that adults find attractive, suggesting a biological basis for some face preferences. However, the basis for infant preferences is not known. Adults find average and symmetric faces attractive. We examined whether 5-8-month-old infants discriminate between different levels of averageness and symmetry in faces, and whether they prefer to look at faces with higher levels of these traits. Each infant saw 24 pairs of female faces. Each pair consisted of two versions of the same face differing either in averageness (12 pairs) or symmetry (12 pairs). Data from the mothers confirmed that adults preferred the more average and more symmetric versions in each pair. The infants were sensitive to differences in both averageness and symmetry, but showed no looking preference for the more average or more symmetric versions. On the contrary, longest looks were significantly longer for the less average versions, and both longest looks and first looks were marginally longer for the less symmetric versions. Mean looking times were also longer for the less average and less symmetric versions, but those differences were not significant. We suggest that the infant looking behaviour may reflect a novelty preference rather than an aesthetic preference.     

Are the predictions of the dynamic dominance model of laterality applicable to the lower limbs?

Investigation of manual actions has supported the proposition that the right and left cerebral hemispheres have complementary specializations relevant for movement control. To test the extent to which hemisphere specialization affect lower limb control, we compared performance between the legs in two motor tasks. A pedal aiming task was employed to test the notion of left hemisphere specialization for dynamic control, and unipedal balance was employed to test the notion of right hemisphere specialization for impedance control. Evaluation was conducted on young adults, in the contexts of separate (Experiment 1) and integrated (Experiment 2) performance of the probing tasks. Results from the aiming task showed equivalent movement linearity toward the target between the right and left feet across experiments. Analysis of unipedal balance revealed that increased stance stability when supported on the left leg was observed when performing simultaneously the aiming task with the contralateral foot, but not in the context of isolated task performance. These results are inconsistent with the proposition of left hemisphere specialization for dynamic control in the lower limbs, and suggest that specialization of the right hemisphere for impedance control can be observed in balance control when stance is associated with voluntary movements of the contralateral lower limb.     

Are there True Contradictions? A Critical Discussion of Graham Priest's, Beyond the limits of thought

The present article critically examines three aspects of Graham Priest's dialetheic analysis of very important kinds of limitations (the limit of what can be expressed, described, conceived, known, or the limit of some operation or other). First, it is shown that Priest's considerations focusing on Hegel's account of the infinite cannot be sustained, mainly because Priest seems to rely on a too restrictive notion of object. Second, we discuss Priest's treatment of the paradoxes in Cantorian set-theory. It is shown that Priest does not address the issue in full generality; rather, he relies on a reading of Cantor which implicitly attributes a very strong principle concerning quantification over arbitrary domains to Cantor. Third, the main piece of Priest's work, the so-called “inclosure schema”, is investigated. This schema is supposed to formalize the core of many well-known paradoxes. We claim, however, that formally the schema is not sound. This revised version was published online in August 2006 with corrections to the Cover Date.     

Are spatial frequencies integrated from coarse to fine?

The existence of a temporal anisotropy in the integration of spatial frequencies, such that spatial frequencies are integrated more effectively if they are available from low to high through time, has been examined in a series of experiments. In the first experiment, the first three harmonics of a square wave were presented in a low-to-high or a high-to-low sequence in a temporal two-interval forced-choice experiment. Subjects were asked to indicate which sequence appeared to resemble a square wave more. A high-to-low sequence of spatial frequencies was judged to more resemble the target than the low-to-high sequence. These results support a temporal anisotropy in the integration of spatial frequencies of exactly the opposite form to that suggested from previous results. Further experiments established that this was not due to task differences or to subjects basing their decision on the final spatial frequency shown. An interpretation is offered in which an isotropic mechanism for spatial-frequency integration is combined with a recency bias.     

When Do Men and Women Make Attributions to Gender Discrimination? The Role of Discrimination Source

Two experiments examined the effects of discrimination source on men’s and women’s willingness to make attributions to a sexist experimenter or sexist rules. Students (161 male; 171 females) at a US university were exposed to a discriminatory person, discriminatory rule, or no discrimination. “Experiment 1” demonstrated individuals were less likely to make attributions to a sexist person than an unfair rule, and women were especially reluctant to indicate a person was responsible for their discrimination even when a person was the source. “Experiment 2” showed participants were less likely to indicate an experimenter, and even a rule, was sexist when there was a cost to the perpetrator (i.e., advisor would be notified of the perpetrator’s actions) for making such attributions.     

Are college students adults? Their conceptions of the transition to adulthood

College students (N=346) were surveyed on their conceptions of the transition to adulthood and their own status as adults. Only 23% indicated that they considered themselves to have reached adulthood, while nearly two-thirds indicated that they considered themselves to be adults in some respects but not in others. The most important criteria for marking the transition to adulthood were indicated to be individualistic and intangible criteria, particularly accept responsibility for the consequences of your actions, decide on beliefs and values independently of parents or other influences, and establish a relationship with parents as an equal adult, each of which was endorsed by more than 70% of the sample. In contrast, role transitions such as completing education, marriage, and becoming a parent were endorsed by less than 20%. It is suggested that the transition from adolescence to adulthood in Western societies is a process that may last many years, during which individualistic and intangible markers of adulthood (such as those specified here) are gradually and incrementally pursued.     

What Principles Are Used to Judge the Fairness of Retrenchment Actions?

The present study identified the bipolar principles that workers use for evaluating the fairness of a broad range of negative organizational events. Two hundred forty-eight respondents were asked to describe recent negative events that occurred in their organizations, and explain the reasons for their fairness perceptions of the events. The responses were coded to yield 5 principles associated with outcome fairness and 8 principles associated with process fairness; this set included principles not found in earlier taxonomies. Support for previous justice models and needed areas of research are discussed.     

Are Christians Theologically Committed to a Rejection of the Principle of Alternative Possibilities?

Many philosophers think that free will requires alternative possibilities. Other philosophers deny this. There are plenty of philosophical arguments on both sides of this debate, but here I want to highlight various theological pressures that might push Christians into rejecting the principle of alternative possibilities. In this paper, I explore six cases that might push Christians in that direction: the case of divine foreknowledge, the case of prophecy, the case of the blessed in heaven, the case of Christ's human freedom, the case of Mary's fiat in light of her immaculate conception, and the case of prayers for the past. As I will argue, in each of these cases, given certain other standard theological commitments, it seems that Christians are pushed to admit that the agent in question does indeed act freely but also that he or she did not possess alternative possibilities at the moment of decision.     

Buber from the Cartesian Perspective? A Critical Review of Reading Buber’s Pedagogy

The positive reception of Buber??s philosophy does not fully match Buber??s intention in terms of overcoming the problem of the subject?Cobject binary. In other words, a number of authors have remained within the traditional way of thinking by merely replacing the subject and object with Buber??s I and You, establishing a more dogmatic normative subjectivity, paradoxically going against Buber??s intent and even seemingly not noticing this problem. In this article, we will investigate the reasons for these paradoxical readings of Buber. By focusing on the structure and significance of Buber??s ontology of between-humane, we will study the concept of I?CYou and I?CIt, suggesting that these are not intentionality-oriented concepts, but a radically relationship-centered one. The theoretical problem caused by Buber himself in the process of adaptation of his dialog-philosophy to his dialog-pedagogy, namely the impossibility of complete mutuality in the educational relationship will be critically examined, based on Buber??s own declaration in his ??Afterword?? (1957) in I and Thou (1923). With this, we will reflect on the problematic situation of post-Buberian literature in contemporary pedagogy to pave a way to modernize Buber??s dialog-pedagogy.     

How Effective Are the Things People Say to Apologize? Effects of the Realization of the Apology Speech Act

The Cross-Cultural Speech Act Realization Project (Blum-Kulka, House, & Kasper, 1989a) has identified five components of an apology speech act set: five strategies that speakers use to apologize. This study examines the effects of four of those strategies (illocutionary force indicating device, expression of responsibility, promise of forebearance, and offer of repair) on the judgments made by hearers about the speaker and about the apology. Each of the strategies is shown to have an independent effect in improving reactions to the speaker. Further, the magnitude of these effects appear to be roughly similar for each of the strategies. The things people say to apologize do seem to be effective in accomplishing the self-presentational goals of apologizers.     

Barriers to primary prevention efforts in the schools: Are we the biggest obstacle to the transfer of knowledge?

Dialogue and debate regarding the definition of prevention has subsided and has been replaced by research and information regarding pathways to dysfunction and effective primary prevention strategies. In spite of the solid research base and the strong desire of practitioners to apply prevention strategies, there continues to be sporadic implementation in schools. Barriers to the implementation of primary prevention programs include traditional professional practice within psychology, lack of communicating pertinent information between professions and policymakers, commitment of resources, and limited understanding of the pathways to successful and widespread implementation. Recommendations to address these barriers are discussed.     

Locked into the System? Critical Community Psychology Approaches to Personal Debt in the Context of Crises of Capital Accumulation

The considerable and sustained boom in personal debt recently has in many countries around the world led to experiences of over‐indebtedness that are associated with very considerable distress and suffering. This article explores critical perspectives that situate personal debt, material deprivation and suffering, and specific ways of knowing and acting, within the context of recent political and economic practices. There is a need to focus on positioning people's experiences of debt within a broader matrix of factors of national and international practices and policies, including globalisation, changing labour markets, and poorly regulated financial industries. These factors appear to have allowed a network of international financial institutions to adopt practices that have proved successful in creating personal debt. Yet, an individualised discourse of financial capability has been propagated, configuring personal debt as a problem of irresponsible individual consumption. In order to explore ways of resisting reactionary and individualised modes of addressing personal debt, proposals will be made of alternative paradigms for responding to personal debt, defined by two dimensions of community psychological practice, with examples. This article aims to increase collective awareness of the systemic character of debt and the collective responses required. Copyright © 2014 John Wiley & Sons, Ltd.     

Is the Critical Point for Aperture Crossing Adapted to the Person-Plus-Object System?

When passing through apertures, individuals scale their actions to their shoulder width and rotate their shoulders or avoid apertures that are deemed too small for straight passage. Carrying objects wider than the body produces a person-plus-object system that individuals must account for in order to pass through apertures safely. The present study aimed to determine whether individuals scale their critical point to the widest horizontal dimension (shoulder or object width). Two responses emerged: Fast adapters adapted to the person-plus-object system by maintaining a consistent critical point regardless of whether the object was carried while slow adapters initially increased their critical point (overestimated) before adapting back to their original critical point. The results suggest that individuals can account for increases in body width by scaling actions to the size of the object width but people adapt at different rates.     

Is the Choice on Termination of Pregnancy Act Guilty of Disability Discrimination?

South Africa's Choice on Termination of Pregnancy Act of 1996 implicitly expresses the attitude that the prenatal detection of foetal abnormality justifies selective abortion, even at a stage when abortion is in general morally prohibited. It will be argued that this attitude is logically incompatible with a simultaneous commitment to non-discrimination against persons with disabilities, in that the Act makes allowance for the subjection of beings that are considered to be morally significant, but that exhibit disabling characteristics, to worse treatment than their non-disabled counterparts, despite the fact that this differential treatment is not always justified by the presence of impairment.     

Are Successful Applicants to the Priesthood Psychologically Healthy?

The current investigation evaluated psychological and personality profiles of successful applicants to a major Roman Catholic religious order. The MMPI-2 and 16PF were administered to 68 applicants between 1990 and 2004 who subsequently entered seminary. Results indicate that these applicants to the priesthood were generally well-adjusted as well as being socially responsible, interpersonally sensitive and sociable. Findings also suggest some tendency for defensiveness and repression. Furthermore, dealing with perceived negative impulses such as anger and hostility may also be a concern for many of these men.     

Are morphological effects distinguishable from the effects of shared meaning and shared form?

Effects of orthographically and semantically related primes were compared with morphologically related primes in an immediate (Experiment 1) and a long-term (Experiment 2) lexical decision task. Morphological relatedness produced facilitation across a range of prime durations (32-300 ms) as well as when items intervened between prime and target, and its magnitude increased with prime duration. Semantic facilitation and orthographic inhibition arose only in the immediate priming task. Moreover, morphological effects were significantly greater than the sum of semantic and orthographic effects at a stimulus onset asynchrony of 300 ms but were not reliably different at shorter durations. The adequacy of an account that describes morphological relatedness as distinct from the composite effects of semantic and orthographic similarity must account for changes in additivity across prime durations.     

Are morally motivated decision makers insensitive to the consequences of their choices?

Is morally motivated decision making different from other kinds of decision making? There is evidence that when people have sacred or protected values (PVs), they reject trade-offs for secular values (e.g., "You can't put a price on a human life") and tend to employ deontological rather than consequentialist decision principles. People motivated by PVs appear to show quantity insensitivity. That is, in trade-off situations, they are less sensitive to the consequences of their choices than are people without PVs. The current study examined the relation between PVs and quantity insensitivity using two methods of preference assessment: In one design, previous results were replicated; in a second, PVs were related to increased quantity sensitivity. These and other findings call into question important presumed properties of PVs, suggesting that how PVs affect willingness to make trade-offs depends on where attention is focused, a factor that varies substantially across contexts.