Imprinted numbers: newborn chicks’ sensitivity to number vs. continuous extent of objects they have been reared with

Newborn chicks were tested for their sensitivity to number vs. continuous physical extent of artificial objects they had been reared with soon after hatching. Because of the imprinting process, such objects were treated by chicks as social companions. We found that when the objects were similar, chicks faced with choices between 1 vs. 2 or 2 vs. 3 objects chose the set of objects of larger numerosity, irrespective of the number of objects they had been reared with. Moreover, when volume, surface or contour length were controlled for using sets of 1 vs. 4, 1 vs. 6 or 1 vs. 3 objects, chicks resorted to choosing the larger object, rather than the familiar numerosity. When, however, chicks were reared with objects differing in their aspect (colour, size, and shape) and then tested with completely novel objects (of different colour and shape but controlled for continuous extent), they chose to associate with the same number of objects they had been reared with. These results suggest that identification of objects as different and separate individuals is crucial for the computation of number rather than continuous extent in numerical representation of small numerosities and provide a striking parallel with results obtained in human infants. Early availability of small numerosity discrimination by chicks strongly suggests that these abilities are in place at birth.     

Keeping the Body in Mind: The Influence of Body Esteem and Body Boundary Aberration on Consumer Beliefs and Purchase Intentions

This research explores the influence of consumers’ body‐related information on beliefs and purchase intentions toward products for which the consumption experience is significantly and directly determined by body‐related information (e.g., feel, fit, sense of safety) when the products are bought in body‐absent purchase environments such as the Internet. We examine the effects of consumers’ body esteem (i.e., like or dislike of one's body) and body boundary aberration (variation in the perceived location of the edges of one's body) in the context of apparel purchases that are made on the Internet. Body esteem had a positive influence on involvement with apparel, and body boundary aberration had a negative influence on consumers’ overall concern with the fit of apparel. Involvement with apparel and overall concern with fit, in turn, significantly influenced consumers’ intentions to purchase apparel online. Consequently, consumers with high body esteem were less likely to buy on the Internet and those with high body boundary aberration were more likely to buy.     

Do Positive and Negative Stereotypes of Gay and Heterosexual Men Affect Job-Related Impressions?

Sex Roles - Traditional gender stereotypes encompass (typically masculine) agency, comprising task-related competence, and (typically feminine) communion or warmth. Both agency and communion are...     

The Development of Anaphora Resolution in Spanish

Journal of Psycholinguistic Research - The present study focuses on the development of Spanish pronominal processing. We investigate whether the pronoun interpretation problem (i.e., reflexive...     

Behavioral and emotional problems among Italian international adoptees and non-adopted children: father's and mother's reports

This study intends to fill the gap in empirical research carried out in Italy regarding international adoptees' behavioral and emotional problems. Assuming a multi-informant approach, it aims to compare parents' reports of behavioral problems of adopted and non-adopted children and to examine parental agreement. The sample was composed of 186 adoptive couples and 195 biological couples with the target child between ages 7 and 11 years. The mother and father filled in the Child Behavior Checklist (CBCL) separately. Analysis of the CBCL revealed that adopted children are perceived by their parents as having more Total and Externalizing Problems than are their non-adopted counterparts. Moreover, they are more likely to demonstrate attention difficulties and aggressive behavior. The agreement between parents turned out to be moderate for adoptive parents and slightly lower for the biological ones. Consistent with most adoption research, the results confirm the higher risk of behavioral problems among adopted children. They also shed light on the significant perceptual discrepancy between mothers and fathers, underlining the importance of considering both parents' reports in the study of adopted children's adjustment.     

The magnitude of binocular disparity modulates search time for targets defined by a conjunction of depth and colour

Nakayama and Silverman (1986) proposed that, when searching for a target defined by a conjunction of color and stereoscopic depth, observers partition 3D space into separate depth planes and then rapidly search each such plane in turn, thereby turning a conjunctive search into a "feature" search. In their study, they found, consistent with their hypothesis, shallow search slopes when searching depth planes separated by large binocular disparities. Here, the authors investigated whether the search slope depends upon the extent of the stereoscopically induced separation between the planes to be searched (i.e., upon the magnitude of the binocular disparity. The obtained slope shows that (1) a rapid search only occurs with disparities greater than 6 min of arc, a value that vastly exceeds the stereo threshold, and that (2) the steepness of this slope increases in a major way at lower disparities. The ability to implement the search mode envisaged by Nakayama and Silverman is thus clearly limited to large disparities; less efficient search strategies are mandated by lower disparity values, as under such conditions items from one depth plane may be more likely to "intrude" upon the other. (PsycINFO Database Record (c) 2008 APA, all rights reserved).     

Why Did They "Choose" to Stay? Perspectives of Hurricane Katrina Observers and Survivors

ABSTRACT— Models of agency—powerful implicit assumptions about what constitutes normatively "good" action—shaped how observers and survivors made meaning after Hurricane Katrina. In Study 1 , we analyzed how 461 observers perceived survivors who evacuated ( leavers ) or stayed ( stayers ) in New Orleans. Observers described leavers positively (as agentic, independent, and in control) and stayers negatively (as passive and lacking agency). Observers' perceptions reflected the disjoint model of agency, which is prevalent in middle-class White contexts and defines "good" actions as those that emanate from within the individual and proactively influence the environment. In Study 2 , we examined interviews with 79 survivors and found that leavers and stayers relied on divergent models of agency. Leavers emphasized independence, choice, and control, whereas stayers emphasized interdependence, strength, and faith. Although both leavers and stayers exercised agency, observers failed to recognize stayers' agency and derogated them because observers assumed that being independent and in control was the only way to be agentic.     

Development of a Substance Abuse Consultation and Referral Service in an Academic Medical Center: Challenges, Achievements and Dissemination

Approximately 25% of US hospital beds are occupied by individuals with active substance use disorders (SUD). Acute medical hospitalization provides an opportunity to address SUDs and provide patient-centered intervention and referral for treatment. Nationally, some hospitals have developed substance abuse consultation departments to improve the care of hospitalized substance users. In this paper we describe the Addiction Psychiatry Service (APS) in a large urban hospital which provides bed-side SUD consultation, screening, intervention and referral to treatment. APS utilizes the multiple disciplines of psychology, social work and medicine to integrate substance abuse services throughout the hospital and educate future generations of medical and psychology trainees. We conclude with how the APS service is informing the development of similar programs in other academic departments within our hospital and best practice recommendations to further disseminate this service model.     

Learning to ignore: Acquisition of sustained attentional suppression

We examined whether the selection mechanisms committed to the suppression of ignored stimuli can be modified by experience to produce a sustained, rather than transient, change in behavior. Subjects repeatedly ignored the shape of stimuli, while attending to their color. On subsequent attention to shape, there was a robust and sustained decrement in performance that was selective to when shape was ignored across multiple-colortarget contexts, relative to a single-color-target context. Thus, amount of time ignored was not sufficient to induce a sustained performance decrement. Moreover, in this group, individual differences in initial color target selection were associated with the subsequent performance decrement when attending to previously ignored stimuli. Accompanying this sustained decrement in performance was a transfer in the locus of suppression from an exemplar (e.g., a circle) to a feature (i.e., shape) level of representation. These data suggest that learning can influence attentional selection by sustained attentional suppression of ignored stimuli.