The grammar of approximating number pairs

In the present article, we studied approximating pairs of numbers (a, b) that were used to estimate quantity in a single phrase (“two, three years ago”). Pollmann and Jansen (1996) found that only a few of the many possible pairs are actually used, suggesting an interaction between the ways in which people estimate quantity and their use of quantitative phrases in colloquial speech. They proposed a set of rules that describe which approximating pairs are used in Dutch phrases. We revisited this issue in an analysis of Swedish and American language corpora and in a series of three experiments in which Swedish and American adults rated the acceptability of various approximating pairs and created approximating pairs of their own in response to various estimation tasks. We found evidence for Pollmann and Jansen’s rules in both Swedish and English phrases, but we also identified additional rules and substantial individual and cross-language variation. We will discuss implications for the origin of this loose “grammar” of approximating pairs.     

A bilateral advantage for storage in visual working memory

Various studies have demonstrated enhanced visual processing when information is presented across both visual hemifields rather than in a single hemifield (the bilateral advantage). For example, Alvarez and Cavanagh (2005) reported that observers were able to track twice as many moving visual stimuli when the tracked items were presented bilaterally rather than unilaterally, suggesting that independent resources enable tracking in the two visual fields. Motivated by similarities in the apparent capacity and neural substrates that mediate tracking and visual working memory (WM), the present work examined whether or not a bilateral advantage also arises during storage in visual WM. Using a recall procedure to assess working memory for orientation information, we found a reliable bilateral advantage; recall error was smaller with bilateral sample displays than with unilateral displays. To demonstrate that the bilateral advantage influenced storage per se rather than just encoding efficiency, we replicated the observed bilateral advantage using sequentially presented stimuli. Finally, to further characterize how bilateral presentations enhanced storage in working memory, we measured both the number and the resolution of the stored items and found that bilateral presentations lead to an increased probability of storage, rather than enhanced mnemonic resolution. Thus, the bilateral advantage extends beyond the initial selection and encoding of visual information to influence online maintenance in visual working memory.     

The driver vigilance telemetric control system (DVTCS): Investigating sensitivity to experimentally induced sleep loss and fatigue

Vigilance technologies are used in the Australian rail industry to address the risks associated with driver sleepiness and fatigue. The aim of this study was to investigate whether a new device, designed to detect lowered states of arousal using electrodermal activity (EDA), would be sensitive to experimentally induced sleepiness and fatigue. Fifteen individuals (7 of them female, 9 male; 18–32 years of age) spent 3 consecutive days in the laboratory, which included 1 night of sustained wakefulness (28 h). The participants completed a 10-min psychomotor vigilance task (PVT) and fatigue and sleepiness ratings every 2 h, and a 30-min driving simulator every 4 h. As was expected, simulated driving, PVT, and subjective ratings indicated increasing levels of sleepiness and fatigue during sustained wakefulness. The EDA device output did not coincide with these findings. The results indicated that the EDA indicator was not sensitive to increased sleepiness and fatigue at the levels produced in the present study.     

Recently attended masks are less effective

Much work has been done to investigate participants' ability to detect repeated targets, but the presentstudy examined the influence of recently attended stimuli on target masking. Participants performed a target identification task in which the item that masked the target was either a recently attended item or a novel item. When it was identical to a previously attended stimulus, the mask was rendered considerably less effective. We have termed this effect a repeated mask reduction (RMR). This simple manipulation resulted in a large, reliable effect on the efficacy of visual masking in a single-target identification paradigm. In Experiments 1, 2, and 3, we demonstrated the basic effect and noted that the RMR increased as task difficulty increased. Experiments 4 and 5 suggested that attention to the first instance of the mask was crucial to this effect by showing that the magnitude of the RMR was unaffected by repetition of nonmask distractors and that the magnitude of the effect was reduced when less attention was paid to the first instance of the mask.     

Negative Interpretations of Interpersonal Situations and the Relation Between Low Perceived Support and Psychological Distress Among Divorced Adults1

This research tested hypotheses for a mechanism by which low perceived support may lead to psychological distress. According to social‐cognitive models, perceived support guides the interpretation of interpersonal situations. People with low perceived support interpret these situations more negatively than do people with high perceived support, and these negative interpretations lead to psychological distress. This mechanism is hypothesized to be distinct from similar mechanisms involving other social‐cognitive constructs, such as dysfunctional attitudes. These hypotheses were tested in 2 samples of adults adjusting to divorce. The data were consistent with predictions. Implications for understanding low perceived support's relation to distress and adults' adjustment to divorce were discussed.     

Developmental Changes in Children''s Ethnic Preferences and Social Cognitions

An experiment was carried out to examine developmental changes in children's ethnic preferences and social cognitions to assess predictions drawn from sociocognitive theory and social identity theory. Two hundred and seventy Anglo-Australian children participated, with equal numbers of 8-, 10-, and 12-year-old children being drawn from one of three types of school that differed in its level of ethnic mix. The children listened to a story about an in-group Anglo-Australian boy and an out-group Vietnamese boy, each of whom displayed equal numbers of ethnic stereotype-consistent and stereotype-inconsistent traits. Each story character also displayed a positive and a negative behaviour. The results revealed that, as they increased in age, the children remembered more of the in-group versus out-group story character's stereotype-inconsistent versus stereotype-consistent traits and that they increasingly disliked the in-group story character, whereas they liked the out-group story character. In addition, the in-group and out-group story characters' negative behaviours were attributed to internal and external causes, respectively, whereas their positive behaviours were attributed to external and internal causes, respectively. The greater support for social identity versus sociocognitive theory revealed by these findings is discussed.     

Youth suicide risk factors and attitudes in New York and Vienna: a cross-cultural comparison

The prevalence of suicide risk factors and attitudes about suicide and help-seeking among New York and Viennese adolescents were compared in order to explore possible cross-cultural differences. Viennese adolescents exhibited higher rates of depressive symptomatology than their New York counterparts and had more first-hand experience with suicidal peers. More attribution of suicide to mental illness was reported in Vienna; yet Viennese youth were less likely than New York adolescents to recognize the seriousness of suicide threats. Help-seeking patterns of Viennese adolescents were influenced by their setting a high value on confidentiality. These cross-cultural differences may reflect the limited exposure of Austrian youth to school-based suicide prevention programs. The findings highlight the need of taking the sociocultural context into consideration in the planning of youth suicide prevention strategies.