Attentional effects on orientation judgements are dependent on memory consolidation processes

Are the effects of memory and attention on perception synergistic, antagonistic, or independent? Tested separately, memory and attention have been shown to affect the accuracy of orientation judgements. When multiple stimuli are presented sequentially versus simultaneously, error variance is reduced. When a target is validly cued, precision is increased. What if they are manipulated together? We combined memory and attention manipulations in an orientation judgement task to answer this question. Two circular gratings were presented sequentially or simultaneously. On some trials a brief luminance cue preceded the stimuli. Participants were cued to report the orientation of one of the two gratings by rotating a response grating. We replicated the finding that error variance is reduced on sequential trials. Critically, we found interacting effects of memory and attention. Valid cueing reduced the median, absolute error only when two stimuli appeared together and improved it to the level of performance on uncued sequential trials, whereas invalid cueing always increased error. This effect was not mediated by cue predictiveness; however, predictive cues reduced the standard deviation of the error distribution, whereas nonpredictive cues reduced “guessing”. Our results suggest that, when the demand on memory is greater than a single stimulus, attention is a bottom-up process that prioritizes stimuli for consolidation. Thus attention and memory are synergistic.     

Testing joint attention, imitation, and play as infancy precursors to language and theory of mind

Various theoretical accounts propose that an important developmental relation exists between joint attention, play, and imitation abilities, and later theory of mind ability. However, very little direct empirical evidence supports these claims for putative “precursor” theory of mind status. A small sample (N=13) of infants, for whom measures of play, joint attention, and imitation had been collected at 20 months of age, was followed-up longitudinally at 44 months and a battery of theory of mind measures was conducted. Language and IQ were measured at both timepoints. Imitation ability at 20 months was longitudinally associated with expressive, but not receptive, language ability at 44 months. In contrast, only the joint attention behaviours of gaze switches between an adult and an active toy and looking to an adult during an ambiguous goal detection task at 20 months were longitudinally associated with theory of mind ability at 44 months. It is argued that joint attention, play, and imitation, and language and theory of mind, might form part of a shared social–communicative representational system in infancy that becomes increasingly specialised and differentiated as development progresses.     

Immigrant acculturation attitudes and host country identification

This study assessed the efficacy of a model predicting the host country identification of members of immigrant groups. The model proposed that host country identification is primarily determined by the positivity of the immigrants' acculturation attitude towards living according to the standards and values of the host country, followed by the degree of acceptance by members of the dominant cultural group, the success immigrants experience in the new country, and the extent to which they choose to live within their ethnic environment rather than the wider society. The study included 602 adult immigrants from a number of countries (Vietnam, People's Republic of China, Hong Kong, Taiwan, Sri Lanka, and New Zealand), which varied in their cultural similarity to the host country, Australia. Results from a multiple regression analysis of participants' questionnaire responses revealed good support for the model. As expected, acculturation attitude towards Australia was the strongest predictor of host country identification, followed by acceptance by Australians, while extent of ethnic involvement was a significant negative predictor. The results also revealed ethnic identification as a significant positive predictor of host country identification. The importance of the relationship between acculturation attitudes and identification is discussed, together with immigrants' identification processes towards their ethnic group and the host country. Copyright © 2000 John Wiley & Sons, Ltd.     

Comparing the mental health needs of female and male incarcerated juvenile delinquents

The present study was undertaken to survey the prevalence of mental disorder in juvenile justice facilities and to compare the mental health needs for females and males. Girls displayed significantly more mental health needs than boys. The estimated prevalence of mental disorder for boys was 27%, compared with 84% for girls. The difference is highly significant and is discussed in terms of service system issues in juvenile justice that affect males and females differently. ©1997 John Wiley & Sons, Ltd.     

Empathy, group norms and children's ethnic attitudes

Two minimal group studies (Ns = 150, 123) examined the impact of emotional empathy on the ethnic attitudes of 5 to 12-year old white Anglo-Australian children. Study 1 evaluated the relationship between empathy and attitudes towards a same (Anglo-Australian) versus different ethnicity (Pacific Islander) outgroup. A significant empathy × outgroup ethnicity interaction revealed that empathy was unrelated to the children's liking for the same ethnicity outgroup, but that liking for the different ethnicity outgroup increased as empathy increased. Study 2 examined the influence of empathy on attitudes towards the different ethnicity outgroup when the ingroup had a norm of inclusion versus exclusion. A significant empathy × group norm interaction revealed that empathy was unrelated to liking when the ingroup had a norm of exclusion, but that liking for the different ethnicity outgroup increased when the ingroup had a norm of inclusion. Implications of the findings for promoting children's positive attitudes to ethnic minority groups are discussed.     

Monkeys represent others' knowledge but not their beliefs

The capacity to reason about the false beliefs of others is classically considered the benchmark for a fully fledged understanding of the mental lives of others. Although much is known about the developmental origins of our understanding of others' beliefs, we still know much less about the evolutionary origins of this capacity. Here, we examine whether non-human primates - specifically, rhesus macaques (Macaca mulatta) - share this developmental achievement. We presented macaques with a looking-time measure of false belief understanding, one that had recently been developed for use with 15-month-old human infants. Like human infants, monkeys look longer when a human experimenter fails to search in the correct location when she has accurate knowledge. In contrast to infants, however, monkeys appear to make no prediction about how a human experimenter will act when she has a false belief. Across three studies, macaques' pattern of results is consistent with the view that monkeys can represent the knowledge and ignorance of others, but not their beliefs. The capacity to represent beliefs may therefore be a unique hallmark of human cognition.     

Cultural Differences in the Subjective Experience of Emotion: When and Why They Occur

Cross‐cultural comparisons of subjective emotional experience are common, and virtually any comparison of nations or different ethnic groups is bound to yield some differences and some similarities. While nobody doubts the considerable intercultural variability in subjective or self‐reports of emotion, more attention needs to be given to when and why and these differences occur. In this article, we explore factors that accentuate or attenuate cultural differences in the subjective experience of emotion. We propose that cultural norms shape emotional experiences to different degrees depending on the time frame of the emotional experience, the valence of the emotion, and even the specific emotion being compared. We review the research that supports this view and we highlight new avenues of research that are likely to shed light on cultural differences in the subjective experience of emotions.     

‘What made me unhappy’. Experiences of,and responses to,lifestyle changes in breast cancer patients

Sixteen breast cancer patients were interviewed about any lifestyle changes they had experienced and their reactions to those changes. Data were collected and analysed via content analysis and then summary tabulations of patient responses until replication of responses was verified across patients. Results indicated that most patients suffered a reduction in recreation activities, unpleasant physical side effects from treatment and loss of feminine appearance characteristics, all of which were seen as decreases in previously available and valuable sources of social support and self-esteem. In response to these losses, patients reported a common coping strategy of avoidance or escape similar to some depressive symptomatology. Implications for counsellors are discussed.     

Test of Alternative Hypotheses Explaining the Comorbidity Between Attention-Deficit/Hyperactivity Disorder and Conduct Disorder

There is significant comorbidity between attention-deficit/hyperactivity disorder (ADHD) and conduct disorder (CD). The conclusions of studies that examined the causes of comorbidity between ADHD and CD conflict, with some researchers finding support for the three independent disorders model and others finding support for the correlated risk factors model. We tested these models and eleven alternative hypotheses using the same analytical approach. The participants were 110 monozygotic twin pairs and 181 dizygotic twin pairs recruited from the Colorado Learning Disabilities Research Center Twin Study. The three independent disorders model did not fit the data, whereas the correlated risk factors model fit the data well. Several other comorbidity models fit the data as well as or better than the correlated risk factors model. The results suggest that correlated risk factors are a better explanation for the comorbidity between ADHD and CD than a third, independent ADHD+CD subtype.