Use of samples differing markedly in salience may encourage use of a single-code/default strategy in matching-to-sample in pigeons

To test the hypothesis that pigeons will only code the more salient sample when samples differ markedly in salience, pigeons were trained with samples consisting of a 2-s presentation of food (highly salient sample) and an 8-s presentation of keylight (less salient sample). During retention testing, pigeons tended to respond at longer delays as if an 8-s keylight sample had been presented. This finding is consistent with use of a single-code/default strategy in which only the 2-s food sample was coded and the comparison associated with an 8-s keylight sample was selected by default in the absence of memory for the salient 2-s food sample. Hence, a marked difference in sample salience appears to encourage use of a single-code/default strategy.     

Adult Attachment in Children Raised by Parents with Schizophrenia

Maternal schizophrenia is known to have an adverse effect on the quality of mother–infant interaction; and children of parents with severe mental illness run a higher risk of poor mental health and social outcomes. Hence, children raised by a parent with schizophrenia may be less likely to attain secure attachment, although there is less evidence so far to support this. Moreover, there is a lack of research in this field that focusses on the needs and experiences, the strengths and vulnerabilities, of the children themselves. Qualitative methods are thus needed to generate new insights and hypotheses. The present study uses semi-structured interviews with 23 adults who, as children, were raised with a parent who experienced schizophrenia. This reveals a range of attachment problems, resulting in difficulties in forming secure adult relationships. Problems with trust and intimacy were found to be common.     

The Credentialing Problems of Foreign Trained Personnel from Asia and Africa Intending to Make their Home in Canada: A Social Psychological Perspective

This study examined the experiences of a sample of skilled immigrants to Canada from Asia and Africa who were currently experiencing credentialing problems (N?=?180). Most respondents had advanced postsecondary training and a job requiring a high level of skill prior to emigrating, but many were unable to obtain equivalent work in Canada. In reaction, they took work for which they were overqualified, volunteered, had their qualifications assessed, and upgraded their training. Most respondents were surprised and upset that it was so difficult for them to obtain a suitable job in their profession, and many felt that immigrants were discriminated against by Canadian employers. The policy implications of this “brain waste” are discussed.     

From marine ecology to crime analysis: Improving the detection of serial sexual offences using a taxonomic similarity measure

Jaccard has been the choice similarity metric in ecology and forensic psychology for comparison of sites or offences, by species or behaviour. This paper applies a more powerful hierarchical measure—taxonomic similarity (Δ_s), recently developed in marine ecology—to the task of behaviourally linking serial crime. Forensic case linkage attempts to identify behaviourally similar offences committed by the same unknown perpetrator (called linked offences). Δ_s considers progressively higher‐level taxa, such that two sites show some similarity even without shared species. We apply this index by analysing 55 specific offence behaviours classified hierarchically. The behaviours are taken from 16 sexual offences by seven juveniles where each offender committed two or more offences. We demonstrate that both Jaccard and Δ_s show linked offences to be significantly more similar than unlinked offences. With up to 20% of the specific behaviours removed in simulations, Δ_s is equally or more effective at distinguishing linked offences than where Jaccard uses a full data set. Moreover, Δ_s retains significant difference between linked and unlinked pairs, with up to 50% of the specific behaviours removed. As police decision‐making often depends upon incomplete data, Δ_s has clear advantages and its application may extend to other crime types. Copyright © 2007 John Wiley & Sons, Ltd.     

Animal innovation defined and operationalized

Innovation is a key component of most definitions of culture and intelligence. Additionally, innovations may affect a species' ecology and evolution. Nonetheless, conceptual and empirical work on innovation has only recently begun. In particular, largely because the existing operational definition (first occurrence in a population) requires long-term studies of populations, there has been no systematic study of innovation in wild animals. To facilitate such study, we have produced a new definition of innovation: Innovation is the process that generates in an individual a novel learned behavior that is not simply a consequence of social learning or environmental induction. Using this definition, we propose a new operational approach for distinguishing innovations in the field. The operational criteria employ information from the following sources: (1) the behavior's geographic and local prevalence and individual frequency; (2) properties of the behavior, such as the social role of the behavior, the context in which the behavior is exhibited, and its similarity to other behaviors; (3) changes in the occurrence of the behavior over time; and (4) knowledge of spontaneous or experimentally induced behavior in captivity. These criteria do not require long-term studies at a single site, but information from multiple populations of a species will generally be needed. These criteria are systematized into a dichotomous key that can be used to assess whether a behavior observed in the field is likely to be an innovation.     

Translation and validation of the Spanish version of the RELATE questionnaire using a modified serial approach for cross-cultural translation.

This article describes the initial translation and validation of the Spanish version of the RELATionshhip Evaluation (RELATE) questionnaire with a sample of monolingual English speakers (n = 78), a sample of monolingual Spanish speakers (n = 18), and two samples of Spanish/English Bilinguals (n = 27 and n = 34). Cross-cultural and cross-language equivalence of the Spanish version of RELATE to the original English version were assessed using a Modified Serial Approach (MSA) for instrument translation. Face and content validity of the Spanish RELATE were established. Test-retest reliability indices obtained with the translated version among the monolingual and bilingual Spanish speaking groups were consistently equivalent to, and in some cases higher than, the baseline reliability obtained with the monolingual English speaking group. Applications of the Spanish version of RELATE and use of the MSA for researchers and practitioners are presented.     

Performance of british university psychology departments as measured by number of publications in BPS journals

The aim of this investigation was to gauge the comparative research performance of university departments of psychology in Britain. The performance indicator was the number of publications per departmental staff member in the journals of the British Psychological Society (BPS) during the seven-year period 1983–1989. The contents of these journals were thoroughly searched, and articles written by members of university psychology departments in Britain were counted. The number of publications of each psychology department was divided by the size of the department in the corresponding year and the resulting annual figures were summed to determine the number of publications in BPS journals per departmental staff member over the seven-year period. These research performance figures correlated significantly with an earlier measure of departmental research performance based on publications in the seven European psychological journals with the highest citations per published article and with recent performance indicators based on other criteria