Numerosity judgments for tactile stimuli distributed over the body surface

A large body of research now supports the claim that two different and dissociable processes are involved in making numerosity judgments regarding visual stimuli: subitising (fast and nearly errorless) for up to 4 stimuli, and counting (slow and error-prone) when more than 4 stimuli are presented. We studied tactile numerosity judgments for combinations of 1-7 vibrotactile stimuli presented simultaneously over the body surface. In experiment 1, the stimuli were presented once, while in experiment 2 conditions of single presentation and repeated presentation of the stimulus were compared. Neither experiment provided any evidence for a discontinuity in the slope of either the RT or error data suggesting that subitisation does not occur for tactile stimuli. By systematically varying the intensity of the vibrotactile stimuli in experiment 3, we were able to demonstrate that participants were not simply using the 'global intensity' of the whole tactile display to make their tactile numerosity judgments, but were, instead, using information concerning the number of tactors activated. The results of the three experiments reported here are discussed in relation to current theories of counting and subitising, and potential implications for the design of tactile user interfaces are highlighted.     

Proactive interference and cuing effects in short-term cued recall: Does foil context matter?

Tehan and Humphreys's (1995, 1996) short-term cued recall paradigm showed that recall in short-term memory is cue driven. In critical trials, the participants studied two blocks of four words each and were required to forget the first block while remembering the second block. A foil in the first block (e.g., orange) was related to a target (e.g., carrot) in the second block. Proactive interference (PI) was evident when a retrieval cue was used that subsumed the foil and the target (e.g., type of juice), but not when a cue was used that subsumed only the target (e.g., type of vegetable). Four experiments were performed to examine the extent to which contextual organization in the foil block would enhance or diminish the foil's efficacy in creating PI. A novel condition was included in which the words in the foil block were studied in a phonologically related context but the target was cued semantically, and vice versa with a semantic context and phonological cue. There were no differences in recall accuracy between conditions with and without contextual organization, but reliable increases in foil intrusions were observed when contextual organization was present. Contextual organization enhanced the foil, rather than diminished it, but the strengthened foil generated PI only when the cue subsumed the foil and the target and had no effect when the cue subsumed only the target. The results are consistent with a cue-driven retrieval interpretation of short-term recall.     

Interdependent self: self-perceptions of Vietnamese-American youths

This study examined how Vietnamese-American adolescents perceive themselves in relation to their families. Qualitative, criterion-based sampling and "snowball" or "chain sampling" strategies were used as well as in-depth interviews with 10 Vietnamese-American adolescents. The research focused on parental interactions, family climate, and parental control. The study also looked at peer relationships, parental input, and adolescents' academic achievement orientation. The adolescents described grow closer to, and more emotionally dependent upon, their parents over time. The parents see their children's education as an effective instrument of empowerment and liberation for the entire family, and as providing hope for the future.     

Leadership experiences of bicultural business leaders: An interpretative phenomenological analysis

Using the lens of interpretative phenomenological analysis, this study explored the leadership experiences of bicultural business leaders in the Philippines. Semistructured interviews were conducted among 16 leaders in family-owned, small and medium-sized enterprises in the Philippines who are ethnically Chinese and have Filipino nationality. Findings focused on salient expressions of biculturalism in leadership, bicultural leadership challenges, and advantages. Most of the participants experienced fluidity in their expressions of Filipino and Chinese identities and how these manifest in the workplace. Challenges shared pertain to generational factors as participants assumed leadership roles through kinship, as well as relational challenges reflective of cultural nuances. The leaders view their being bicultural as having the “best of both worlds” as they have greater access to cultural information and a more holistic view of which values and norms to use in their leadership roles and in various social interactions. Fluency in communicating in Chinese and Filipino was perceived to enable effective interactions and facilitate trust building with their customers, employees, and suppliers. Implications focused on the need to consider biculturalism in leadership development programmes in educational institutions and organizations, especially with increasing bi/multiculturalism in workplaces.     

Suicide trends in Australia, 1901-1985: an analysis of sex differentials

This paper analyzes trends in the male-female suicide ratio in Australia, using data for the period 1901-1985. The main finding of the paper is that modernization, as measured by an index composed of the female participation rate in the labor force and the urbanization rate, is positively related to the male-female suicide ratio. This is contrary to an earlier finding by Stack and Danigelis (1985), who reported an inverse relationship between these two variables. This finding is shown to be due to the fact that no correction was made for trend. When the data series are corrected for trend, a significant positive relationship is found between modernization and the male-female suicide ratio in Australia. Another finding of the paper is that the female suicide rate in Australia has been falling significantly since the mid-1960s. This is also at variance with Stack and Danigelis's hypothesis that as modernization proceeds, the female suicide rate rises. We discuss reasons for this in the Australian context.     

Filial ethics and judgments of filial behaviour in Taiwan and the United States

Parent-child relationships are fundamental human relationships in which specific norms govern proper parent-child interactions. Such norms, or filial ethics, have been observed in different cultures, including in the United States and Taiwan, but important differences may exist in how filial practices are viewed across cultures. From a traditional view of power as domination over others, if filial relationships are viewed to reflect power differentials between parents and children, actors who follow filial ethics should be viewed as less powerful than actors who do not follow filial ethics for maintaining or enhancing positive parent-child relationships. Alternatively, power can be conceptualized as the ability to meet one's needs (e.g., for communal care and trust), and actors who follow filial ethics should be viewed as more powerful and trustworthy than actors who do not follow filial ethics because they have the ability to maintain or enhance positive parent-child relationships. Based on a power-trust model, we compared American and Taiwanese perceptions of actors in an experiment using vignettes describing filial behaviours. We conducted a path analysis with a sample of 112 American and 74 Taiwanese participants to test the proposed relations. Results showed that both Taiwanese and Americans rated actors more favourably (i.e., as more powerful and trustworthy) when actors behaved according to filial ethics than when they did not. Some cross-cultural differences were also observed: Taiwanese attributed trust-traits to actors who performed filial practices to a larger degree than did Americans. We discuss implications for the implicit nature of filial relationships and conceptualization of power cross-culturally.     

Assessing Measurement Invariance of the Children's Depression Inventory in Chinese and Italian Primary School Student Samples

This study tested the measurement invariance of Children's Depression Inventory (CDI) and compared its factorial variance/covariance and latent means among Chinese and Italian children. Multigroup confirmatory factor analysis of the original five factors identified by Kovacs revealed that full measurement invariance did not hold. Further analysis showed that 4 of 21 factor loadings, 14 of 26 intercepts, and 12 of 26 item errors were noninvariant. Factor variance and covariance invariant tests revealed significant differences between Chinese and Italian samples. The latent factor mean comparison suggested no significant difference across the two groups. Nevertheless, the finding of partial metric and scalar invariance suggested that observed mean differences on the CDI items cannot be fully explained by the mean differences in the latent factor. These results suggest that researchers and practitioners exercise caution when gauging the size of the true national population differences in depressive symptoms among Italian and Chinese children when assessed via CDI. In addition to providing needed evidence on the use of the CDI in Italian and Chinese children specifically, the methods used in this research can serve more generally as an example for other cross-cultural assessment research to test structural equivalence and measurement invariance of scales and to determine why it is important to do so.     

Understanding Asian parenting from a Rasch perspective

This study examines the factor structure of Asian child‐reported parenting from a Rasch perspective. Participants comprised 291 sixth graders (11 to 13 years) in Singapore. Six different aspects of parenting were measured, namely warmth, rejection, structure, chaos, autonomy support, and coercion. Rasch Analysis was used to transform ordinal data into linear measures; category functioning was examined; residual‐based principal components were analysed; differential item functioning was assessed; and items and subjects that were misfitting were removed. Results showed that parenting comprised six dimensions, namely warmth, autonomy support, structure‐control, structure‐warmth, chaos, and negative parenting. The findings suggest that it is important for Asian parents to provide guidance to their children (in structure‐control and structure‐warmth) and reaffirms the relevance of warmth in Asian parenting.     

How does cognition evolve? Phylogenetic comparative psychology

Now more than ever animal studies have the potential to test hypotheses regarding how cognition evolves. Comparative psychologists have developed new techniques to probe the cognitive mechanisms underlying animal behavior, and they have become increasingly skillful at adapting methodologies to test multiple species. Meanwhile, evolutionary biologists have generated quantitative approaches to investigate the phylogenetic distribution and function of phenotypic traits, including cognition. In particular, phylogenetic methods can quantitatively (1) test whether specific cognitive abilities are correlated with life history (e.g., lifespan), morphology (e.g., brain size), or socio-ecological variables (e.g., social system), (2) measure how strongly phylogenetic relatedness predicts the distribution of cognitive skills across species, and (3) estimate the ancestral state of a given cognitive trait using measures of cognitive performance from extant species. Phylogenetic methods can also be used to guide the selection of species comparisons that offer the strongest tests of a priori predictions of cognitive evolutionary hypotheses (i.e., phylogenetic targeting). Here, we explain how an integration of comparative psychology and evolutionary biology will answer a host of questions regarding the phylogenetic distribution and history of cognitive traits, as well as the evolutionary processes that drove their evolution.