When believing is seeing: the role of predictions in shaping visual perception

The study investigated the influence of predictions on perception-in particular, how strong but erroneous prediction coupled with poor sensory data can trigger misperceptions. Using signal detection, we tested whether predictions induced by a semantic cue change the recognition threshold (criterion) or the subjectively perceived differences between stimuli (sensitivity). In a series of 3 experiments, participants observed pictures of (a) real objects distorted to various extents (targets), (b) noise with elements corresponding to meaningful objects (foils), or (c) nonsense images (noise). Stimuli were preceded either by a semantic cue or by a blank screen with equal probability. Presence of the cue resulted in a more liberal criterion, but only for targets and foils. The cue decreased sensitivity between the distorted targets, but increased sensitivity between the targets and noise-that is, the cue increased between-class differences, but decreased within-class differences. When there was no correspondence between prediction and the sensory input, prediction actually increased the chances of correctly rejecting noise. The influence of the cue was strongest for the moderately distorted targets and foils-when uncertainty related to the bottom-up input was the highest.     

Guilt and Guiltlessness: An Integrative Review

This paper reviews the relationship between guilt and prosocial behaviors, and integrates multiple antisocial phenomena with the construct of guiltlessness both at the interpersonal and intergroup level. Interpersonal guilt is basically prosocial and introspective. Collective guilt is the vicarious acceptance of misdeeds of the ingroup. Yet it is sometimes so painful and detrimental for the individual and the society to tolerate guilt that people do not feel guilty, especially when the possibility of reparation is low. We argue that guilt is the acceptance of the mildly undesirable self whereas guiltlessness is the rejection of unbearable mental distress of anticipatory guilt. Guiltlessness requires great efforts for defense and justification. Multiple strategies and justifications are sought to relieve guilt. Furthermore, guiltlessness is related to various personality and ideology variables and entails moral disengagement. Guiltlessness can be destructive because, for example, during times of large‐scale conflicts ordinary people who feel guiltless are inclined to become ruthless. Reciprocity morality, ostracism, deservingness, empathy, and self‐control are proposed as means of explaining the origins of guilt and their implications for guiltlessness.     

On the nature of identity fusion: insights into the construct and a new measure

Previous research has documented the consequences of feeling fused with a group; here we examine the nature of identity fusion. Specifically, we sought to determine what fusion is and the mediating mechanisms that lead fused individuals to make extraordinary sacrifices for their group. Guided by the assumption that fusion emphasizes the extent to which people develop relational ties to the group, we developed a measure designed to capture feelings of connectedness and reciprocal strength with the group. In 10 studies, the newly developed scale displayed predicted relationships with related measures, including an earlier (pictorial) measure of fusion and a measure of group identification. Also as expected, fusion scores were independent of several measures of personality and identity. Moreover, the scale predicted endorsement of extreme progroup behaviors with greater fidelity than did an earlier pictorial measure of identity fusion, which was, in turn, superior to a measure of group identification. Earlier evidence that the personal and social selves of fused persons are functionally equivalent was replicated, and it was shown that feelings of agency and invulnerability mediated the effects of fusion on extreme behavior. Finally, Spanish- and English-language versions of the verbal fusion scale showed similar factor structure as well as evidence of convergent, discriminant, and predictive validity in samples of Spaniards and Americans, as well as immigrants from 22 different countries. This work advances a new perspective on the interplay between social and personal identity.     

Hope in Africa? Social representations of world history and the future in six African countries

Data on social representations of world history have been collected everywhere in the world except sub-Saharan Africa. Two studies using open-ended data involving university students from six African countries fill this gap. In Study 1, nominations from Cape Verde and Mozambique for the most important events in world history in the past 1000 years were dominated by war and politics, recency effects, and Western-centrism tempered by African sociocentrism on colonization and independence. The first three findings replicated previous research conducted in other parts of the world, but the last pattern contrasted sharply with European data. Study 2 employed a novel method asking participants how they would begin the narration of world history, and then to describe a major transition to the present. Participants most frequently wrote about the evolution of humanity out of Africa, followed by war and then colonization as a beginning, and then replicated previous findings with war, colonization, and technology as major transitions to the present. Finally, when asked about how they foresaw the future, many participants expressed hope for peace and cooperation, especially those facing more risk of collective violence (Burundi and Congo). A colonial/liberation narrative was more predominant in the data from former Portuguese colonies (Angola, Cape Verde, and Guinea-Bissau) than from former Belgian colonies (Burundi and Congo).     

Analysis of movement patterns by elite male players of beach volleyball

The aim of this study was to analyse and compare movement pattems and direction of locomotion in professional men's beach volleyball. A quantitative analysis of beach volleyball play was carried out for 10 players in the European Beach Volleyball Championship 2005. Video recordings were made of the 1,997 movements in 4 matches. Analysis showed that male players used more offensive than defensive movement patterns. Defensive movement patterns were more blocks and defense than receptions. Offensive movement patterns were more attack and placements than attack preparation moves. Advance was the direction of locomotion most used. Identifying and understanding such movement patterns are vital to defining specific, effective training strategies for men's beach volleyball players.     

Cost-effectiveness of Internet-based cognitive behavior therapy vs. cognitive behavioral group therapy for social anxiety disorder: results from a randomized controlled trial

Social anxiety disorder (SAD) is highly prevalent and associated with a substantial societal economic burden, primarily due to high costs of productivity loss. Cognitive behavior group therapy (CBGT) is an effective treatment for SAD and the most established in clinical practice. Internet-based cognitive behavior therapy (ICBT) has demonstrated efficacy in several trials in recent years. No study has however investigated the cost-effectiveness of ICBT compared to CBGT from a societal perspective, i.e. an analysis where both direct and indirect costs are included. The aim of the present study was to investigate the cost-effectiveness of ICBT compared to CBGT from a societal perspective using a prospective design. We conducted a randomized controlled trial where participants with SAD were randomized to ICBT (n = 64) or CBGT (n = 62). Economic data were assessed at pre-treatment, immediately following treatment and six months after treatment. Results showed that the gross total costs were significantly reduced at six-month follow-up, compared to pre-treatment in both treatment conditions. As both treatments were equivalent in reducing social anxiety and gross total costs, ICBT was more cost-effective due to lower intervention costs. We conclude that ICBT can be more cost-effective than CBGT in the treatment of SAD and that both treatments reduce societal costs for SAD.     

Comparison of two self-regulated and strategic instructional programs for improving writing competence

This study compared the efficacy of two versions of an instructional program aimed at developing strategic and self-regulated writing competence. In the full version, strategy instruction, students were taught strategies for producing effective text, using a combination of direct (explicit, declarative, metacognitive knowledge) instruction, teacher modeling, and collaborative and individual practice. In a modeling-only version, direct instruction was omitted. 72 Spanish 6th grade students were taught in one of three groups: Full Strategy Instruction (N=24); Modeling only (N=25), and a normal curriculum (no strategy instruction) control (N=23). Pre and posttest measures of written texts, self-efficacy and self-knowledge of writing were taken. Pre and posttest scores on writing ability tests indicated similar improvement in both intervention groups, relative to control, in both holistic measures of text quality and in counts of text features associated with mature, reader-focused composition. We found no differences between intervention groups. These findings suggest that modeling and student practice alone are sufficient to develop effective writing strategies in typically-developing 6th grade students.     

General cognitive functioning and psycholinguistic abilities in children with Smith-Magenis Syndrome

This study is a neuropsycholinguistic research of a rare genetic syndrome with microdeletion that co-occurs with intellectual disabilities and relatively good language abilities, the Smith-Magenis Syndrome (SMS). Nevertheless, there are no cognitive and psycholinguistic profile analyses performed with Spanish population. In this sense, we characterized the cognitive and psycholinguistic profile of a sample with 9 participants with SMS (7 to 11 years of age). The cognitive and psychological profile was assessed with diverse standardized tests: Wechsler Intelligence Scale for Children - IV version, Illinois Test of Psycholinguistic Abilities and Peabody Picture Vocabulary Test. Results suggest a specific cognitive and psychological profile characterized by a low IQ and relative good abilities in integrating information, whereas attention problems and hyperactive behaviors were displayed when interacting with the child during the assessment. This work is the first evidence of the cognitive and psycholinguistic profile characterization in patients with SMS in Spain, and will help to guide a more accurate diagnosis and differential intervention in rare genetic diseases with similar cognitive and psycholinguistic profiles.     

eCAT-Listening: design and psychometric properties of a computerized adaptive test on English Listening

In this study, eCAT-Listening, a new computerized adaptive test for the evaluation of English Listening, is described. Item bank development, anchor design for data collection, and the study of the psychometric properties of the item bank and the adaptive test are described. The calibration sample comprised 1.576 participants. Good psychometric guarantees: the bank is unidimensional, the items are satisfactorily fitted to the 3-parameter logistic model, and an accurate estimation of the trait level is obtained. As validity evidence, a high correlation was obtained between the estimated trait level and a latent factor made up of the diverse criteria selected. The analysis of the trait level estimation by means of a simulation led us to fix the test length at 20 items, with a maximum exposure rate of .40.     

Do adolescents who use stimulants have a different personality?

Stimulant consumption is especially important in our context because its use has greatly increased in recent years. The aim of the present study is to analyze the differences between stimulant users and nonusers (under 18 years old) in personality characteristics assessed with the MACI. The sample comprises 398 youths between 14 and 17 years old who were selected through random sampling in their homes or in recreational night spots. Results show important differences in personality features between stimulant users and nonusers. Stimulant users are characterized by having unruly, forceful, oppositional and borderline-tendency personality prototypes.