No postnatal maternal effect on male aggressiveness in wild-derived strains of house mice

Male aggressiveness is a complex behavior influenced by a number of genetic and non-genetic factors. Traditionally, the contribution of each of these factors has been established from experiments using artificially selected strains for high/low aggressive phenotypes. However, little is known about the factors underlying aggressive behavior in natural populations. In this study, we assess the influence of genetic background vs. postnatal maternal environment using a set of cross-fostering experiments between two wild-derived inbred strains, displaying high (STRA, derived from Mus musculus domesticus) and low (BUSNA, derived from Mus musculus musculus) levels of aggressiveness. The role of maternal environment was tested in males with the same genetic background (i.e. strain origin) reared under three different conditions: unfostered (weaned by mother), infostered (weaned by an unfamiliar dam from the same strain), and cross-fostered (weaned by a dam from a different strain). All males were tested against non-aggressive opponents from the A/J inbred strain. Resource-holding potential was assessed through body weight gains and territory ownership. The STRA males were shown to be aggressive in both neutral cage and resident-intruder tests. On the contrary, the BUSNA males were less aggressive in all tests. We did not find a significant effect of postnatal maternal environment; however, we detected significant maternal effect on body weight with differences between the strains, fostering type and interactions between these factors. We conclude that the aggressiveness preserved in the two strains has significant genetic component whose genetic basis can be dissected by quantitative trait loci analysis.     

Are we all in this together?: co-victimization,inclusive social identity and collective action in solidarity with the disadvantaged

Common experience of injustice can be a potent motivator of collective action and efforts to achieve social change - and of such efforts becoming more widespread. In this research, we propose that the effects of co-victimization on collective action are a function of inclusive social identity. Experiment 1 (N= 61) demonstrated that while presence (compared to absence) of co-victimization positively predicted consumer (i.e., participants) willingness to act collectively in solidarity with sweatshop workers, this effect was mediated by inclusive social identity. In Experiment 2 (N= 120), the salience of inclusive social identity was experimentally manipulated and interacted with co-victimization to predict collective action. When inclusive social identity was salient, co-victimization enhanced collective action, including willingness to pay extra for products made ethically and in support of fair wages for workers. In contrast, collective action was attenuated when co-victimization took place in the absence of inclusive social identity. Implications for understanding when co-victimization is transformed into common fate and political solidarity with the disadvantaged are discussed.     

Revisiting the suitability of antisaccade performance as an endophenotype in schizophrenia

Poor performance on the antisaccade task has been proposed as a candidate endophenotype in schizophrenia. Caveats to this proposal, however, include inconsistent findings in first-degree relatives of individuals with schizophrenia, and substantial heterogeneity in individuals with the disorder. In this study, we examined antisaccade performance in patients and relatives, and sought to establish whether antisaccade measures could differentiate between two patients clusters identified in the Western Australian Family Study of Schizophrenia with either pervasive cognitive deficits (CD) or cognitively spared (CS). Ninety-three patients (CD = 47, CS = 46), 99 relatives and 62 healthy controls carried out a standard antisaccade task. Results showed: (i) significantly greater error rate, and prolonged latencies to correct responses and self-correction saccades in patients compared with controls; (ii) high error rates in relatives of poorly performing patients; (iii) longer latencies of self-correction saccades in relatives compared to controls; and (iv) higher error rate and longer latencies of self-correction saccades in the CD subgroup compared with CS. Unaffected relatives as a group were unimpaired in error rate as compared to healthy controls. These findings suggest that the antisaccade error rate and latency of self-correction saccades are useful measures in specific applications of genetic research in schizophrenia, without fully meeting endophenotype co-familiality requirements.     

Social Development of Preschool Children in Croatia: Contributions of Child Temperament, Maternal Life Satisfaction and Rearing Practices

We conducted the present study to examine the relationship of maternal characteristics (estimated happiness and life satisfaction, and child-rearing practices) and children’s temperament to conduct problems and prosocial behavior of preschool children in Croatia. Participants were mothers of 258 children (mean age 61.62 months), who gave their estimations on the Satisfaction with Life Scale, the Subjective Happiness Scale, the Parental Behaviour Questionnaire, the EAS Temperament Survey and the Strengths and Difficulties Questionnaire. After analyzing correlations between all the variables included in research, we conducted two hierarchical regression analyses with implementation of predictor variables in 4 stages (socio-demographic variables; mothers’ estimated happiness and life satisfaction; child temperament; mothers’ parenting). In the final step of regression significant predictors of preschoolers’ conduct problems were children’s age, temperamental emotionality and activity, and mothers’ punishment and inductive reasoning. When predicting children’s prosocial behavior, significant predictors were mothers’ inductive reasoning and warmth, and children’s age and temperamental shyness.     

Effects of training condition on the contribution of specific items to relational processing in baboons (Papio papio)

Relational processing involves learning about the relationship between or among stimuli, transcending the individual stimuli, so that abstract knowledge generalizable to novel situations is acquired. Relational processing has been studied in animals as well as in humans, but little attention has been paid to the contribution of specific items to relational thinking or to the factors that may affect that contribution. This study assessed the intertwined effects of item and relational processing in nonhuman primates. Using a procedure that entailed both expanding and contracting sets of pictorial items, we trained 13 baboons on a two-alternative forced-choice task, in which they had to distinguish horizontal from vertical relational patterns. In Experiment 1, monkeys engaged in item-based processing with a small training set size, and they progressively engaged in relation-based processing as training set size was increased. However, in Experiment 2, overtraining with a small stimulus set promoted the processing of item-based information. These findings underscore similarities in how humans and nonhuman primates process higher-order stimulus relations.     

Space and Language in Conceptualizing Identity

In this paper, we discuss the conceptualization of space as a dimension relevant to personal identity and the central role that is attributed to language with respect to its constitution. It is argued that the identification with a certain geographical space and the use of (a) certain language(s) or linguistic variety can be regarded as crucial for the self-definition of individuals and also groups. We pursue a threefold goal: (1) to highlight the contribution of geographical research to our understanding of the self as a phenomenon situated in space; (2) to discern merits, but also problems related to the recent strong emphasis of the role of language with respect to identity constitution, especially in constructivist and poststructuralist approaches; and (3) on the basis of these findings, to draw conclusions concerning the given and constructed elements of identity, with a particular focus on space and language. In addition to a survey of relevant theoretical positions, empirical examples are presented with the aim to illustrate how geographically marked identity is constituted.

     

Spirituality in Occupational Therapy: Do We Practice What We Teach?

This mixed-method study examined the responses of 97 occupational therapists on the subject of spirituality in occupational therapy practice. The inclusion of spirituality into the Occupational Therapy Practice Framework (2008) implies that clinicians address spirituality as a component of client-centered practice. This research revealed a gap between education, theory, and practice as evidenced in the quantitative and qualitative data. Although occupational therapy is intended to be holistic, therapists require a more complete understanding of what spirituality is and what the role of the occupational therapist is when addressing spirituality in evaluation or treatment. The discussion of this research provides information for future occupational therapy educators and educational programs as they seek to incorporate the construct of spirituality into curricula.     

Effect on Comprehension of Preposed versus Postposed Adverbial Phrases

A challenge for psycholinguistics is to describe how linguistic cues influence the construction of the mental representation resulting from the comprehension of a text. In this paper, we will focus on one of these linguistic devices: the sentence-initial positioning of spatial adverbials such as In the park.... Three self-paced reading experiments were conducted to test the ‘Discourse Framing Hypothesis’ according to which preposed adverbials can be seen as frame builders announcing that incoming contents satisfy the same informational criterion specified by the adverbial. Our results indicate that spatial adverbials do not play the same role when they are in sentence-initial and in sentence-final position. These results are discussed in the framework of Zwaan’s Event Indexing Model.