Experiments on the Fehrer–Raab effect and the ‘Weather Station Model’ of visual backward masking

The Fehrer–Raab effect (simple reaction time is unaffected by metacontrast masking of the test stimulus) seems to imply that a stimulus can trigger a voluntary reaction without reaching a conscious representation. However, it is also possible that the mask triggers the reaction, and that the masked test stimulus causes a focussing of attention from which processing of the mask profits, thus reaching conscious representation earlier. This is predicted by the Weather Station Model of visual masking. Three experiments tested this explanation. Experiment 1 showed that the masked test stimulus caused a temporal shift of the mask. Experiment 2 showed that the reaction in the Fehrer–Raab effect was not exclusively triggered by a conscious representation of the test stimulus: the mask was involved in evoking the reaction. Experiment 3 again revealed a temporal shift of the mask. However, the shift was only about half as large as the Fehrer–Raab effect. The psychometric functions suggested that the observers used two different cues for their temporal order judgments. The results cast doubts on whether judged temporal order yields a direct estimate of the time of conscious perception. Some methodological alternatives are discussed.     

Reading the tea leaves in an intelligent Coffee Corner: Challenges for understanding behavior

This article discusses the challenges for methodological innovation on the basis of experiences in an experimental Living Lab setting: a context-aware Coffee Corner in a research institute. A context-aware infrastructure collects sensory information on users while they move and interact. People getting coffee can use a variety of services offered in the intelligent environment at the Coffee Corner’s site; for example, a colleague-radar application allows users to see the current positions of their colleagues in the building. At the same time, it identifies and authenticates users using proximity-aware and context-aware security features. Apart from proximity and context awareness, the analysis of contextual data allows the construction of a behavioral model of users that can be used to customize the services offered at the Coffee Corner. We explain how the Living Lab allows us to measure behavior in context in an unobtrusive and trustworthy way (e.g., by respecting a user’s right to privacy).     

French native speakers in the making: From language-general to language-specific voicing boundaries

By examining voice onset time (VOT) discrimination in 4- and 8-month-olds raised in a French-speaking environment, the current study addresses the question of the role played by linguistic experience in the reshaping of the initial perceptual abilities. Results showed that the language-general −30- and +30-ms VOT boundaries are better discriminated than the 0-ms boundary in 4-month-olds, whereas 8-month-olds better discriminate the 0-ms boundary. These data support explanations of speech development stressing the effects of both language-general boundaries and linguistic environment (attunement theory and coupling theory). Results also suggest that the acquisition of the adult voicing boundary (at 0 ms VOT in French vs. +30 ms VOT in English) is faster and more linear in French than in English. This latter aspect of the results might be related to differences in the consistency of VOT distributions of voiced and voiceless stops between languages.     

What matters most to prejudice: Big Five personality,Social Dominance Orientation,or Right‐Wing Authoritarianism?

Whereas previous research has studied the relation of either (i) personality with prejudice, (ii) personality with social dominance orientation (SDO) and right‐wing authoritarianism (RWA), or (iii) SDO and RWA with prejudice, the present research integrates all approaches within the same model. In our study (N = 183), various causal models of the relationships among the Big Five, SDO, RWA, and Generalized Prejudice are proposed and tested. Generalized Prejudice scores were obtained from a factor analysis of the scores on various prejudice instruments (racism, sexism, prejudice toward homosexuals, and mentally disabled people), which yielded a one‐factor solution. The best‐fitting causal model, which was our suggested hypothetical model, showed that Big Five personality had no direct effect on Generalized Prejudice but an indirect effect transmitted through RWA and SDO, where RWA seems to capture personality aspects to a greater extent than SDO. Specifically, Generalized Prejudice was affected indirectly by Extraversion, Openness to Experience, and Conscientiousness through RWA, and by Agreeableness through SDO, whereas Neuroticism had no effect at all. The results are discussed against the background of previous research and the personality and social psychology approaches to the study of prejudice. Copyright © 2004 John Wiley & Sons, Ltd.     

Measuring and modeling salience with the theory of visual attention

For almost three decades, the theory of visual attention (TVA) has been successful in mathematically describing and explaining a wide variety of phenomena in visual selection and recognition with high quantitative precision. Interestingly, the influence of feature contrast on attention has been included in TVA only recently, although it has been extensively studied outside the TVA framework. The present approach further develops this extension of TVA’s scope by measuring and modeling salience. An empirical measure of salience is achieved by linking different (orientation and luminance) contrasts to a TVA parameter. In the modeling part, the function relating feature contrasts to salience is described mathematically and tested against alternatives by Bayesian model comparison. This model comparison reveals that the power function is an appropriate model of salience growth in the dimensions of orientation and luminance contrast. Furthermore, if contrasts from the two dimensions are combined, salience adds up additively.     

Does a short self‐compassion intervention for students increase healthy self‐regulation? A randomized control trial

The primary aim of this study was to examine the effects of a two‐week self‐compassion course on healthy self‐regulation (personal growth self‐efficacy and healthy impulse control) and unhealthy self‐regulation (self‐judgment and habitual negative self‐directed thinking) in university students. We also examined the effects on self‐compassion, anxiety and depression. Students (N = 158, 85% women, mean age = 25 years) were randomized to an intervention group and a waiting‐list control group in a multi‐baseline randomized control trial. Healthy self‐control was measured by the Personal Growth Initiative Scale (PGIS) and the Self‐Control Scale; unhealthy self‐control was measured by the Non‐judgement subscale from the Five‐Facet Mindfulness Questionnaire (reversed) and the Habit Index of Negative Thinking (HINT). Secondary outcomes were measured by the State‐Trait Anxiety Inventory (STAI‐trait), the Major Depression Inventory (MDI), and the Self‐Compassion Scale (SCS). A 2 × 3 repeated measures analysis of variance (ANOVA) showed gains for the intervention‐group in personal growth self‐efficacy and healthy impulse‐control and reductions in self‐judgment and habitual negative self‐directed thinking, as well as increases in self‐compassion and reductions in anxiety and depression. After all participants had completed the course, the groups were combined and repeated measures ANOVAs showed that changes remained at six‐month follow‐up for personal growth self‐efficacy, self‐judgment and habitual negative self‐directed thinking; as well as for self‐compassion, anxiety and depression. Concluding, a short self‐compassion course seems an effective method of increasing self‐compassion and perceived control over one's life for university students, as well as increasing mental health.     

Emotion recognition of facial expressions in adults with attention deficit hyperactivity disorder / Reconocimiento de emociones de expresiones faciales en adultos con trastorno de hiperactividad con déficit de atención

Various studies have indicated that children with ADHD have difficulties with the facial interpretation of affect. Research in the adult ADHD population overall is scarce. The present study explores how adults with ADHD react to a simple attention task and an emotion-containing task. Thirty adults clinically diagnosed with ADHD and 30 non-ADHD controls completed a computer-based task through a set of facial expressions standardized for Chile. The task was composed of two parts: first, a simple attention task with facial expressions; and second, a facial expression-labelling task. Reaction Time (RT) and Accuracy (Acc) of responses were evaluated. Participants with ADHD responded significantly faster and were significantly less accurate in both tasks compared to controls. Across both groups, emotion-specific errors increased in the facial expression of anger. Additionally, the ADHD group was significantly faster in responding for anger, but not for happiness or neutral expressions. Impulsivity commonly associated with ADHD may account for faster RT and lower Acc. Moreover, happiness may be more pleasant to identify than anger. These results are consistent with studies that have recorded greater Acc for positive emotions in comparison with negative emotions.     

Self-esteem,employability attributes,and retention factors of employees within the financial sector

This study explored the relationship between personal factors and job retention in a South African financial services sector setting. A non-probability purposive sample of employees (n = 383; females = 57%, black = 42%) of two financial institutions were participants (age range = 25 to 65; middle management = 34%). The employees reported on their self-esteem, employability attributes, and job retention factors. The data were analysed to predict job retention factors from the personal factors of self-esteem and employability. The results indicate overall self-esteem, employability attributes, and age to significantly and positively predict job retention factors of employees within the financial services industry. The self-esteem psychological aspects of general self-esteem, social self-esteem, and personal self-esteem, uniquely predicted job retention factors. Additionally, the employability attributes of career self-management, cultural competence, self-efficacy career resilience, sociability, entrepreneurial orientation, proactivity, and emotional literacy uniquely predicted job retention factors.     

Perceptual learning of noise vocoded words: effects of feedback and lexicality

Speech comprehension is resistant to acoustic distortion in the input, reflecting listeners' ability to adjust perceptual processes to match the speech input. This adjustment is reflected in improved comprehension of distorted speech with experience. For noise vocoding, a manipulation that removes spectral detail from speech, listeners' word report showed a significantly greater improvement over trials for listeners that heard clear speech presentations before rather than after hearing distorted speech (clear-then-distorted compared with distorted-then-clear feedback, in Experiment 1). This perceptual learning generalized to untrained words suggesting a sublexical locus for learning and was equivalent for word and nonword training stimuli (Experiment 2). These findings point to the crucial involvement of phonological short-term memory and top-down processes in the perceptual learning of noise-vocoded speech. Similar processes may facilitate comprehension of speech in an unfamiliar accent or following cochlear implantation.     

Children's false memories: easier to elicit for a negative than for a neutral event

The present study examined the role of valence in the development of children's implanted false memories. Seventy-six 7-year-old children listened to two true and one false narrative. The false narrative was either neutral ("moving to another classroom") or emotional negative ("being accused by the teacher for copying off your neighbor"). In addition, half of the children were presented with their class photograph while listening to the narratives. During two interviews, children recalled as many details as possible from the true and false events. Results showed that the negative event elicited more false memories than the neutral event. The presentation of a true photograph did not promote the development of false memories.