Revision: is visual perception a requisite for visual imagery?

Vision is the most highly developed sense in man and represents the doorway through which most of our knowledge of the external world arises. Visual imagery can be defined as the representation of perceptual information in the absence of visual input. Visual imagery has been shown to complement vision in this acquisition of knowledge--it is used in memory retrieval, problem solving, and the recognition of properties of objects. The processes underlying visual imagery have been assimilated to those of the visual system and are believed to share a neural substrate. However, results from studies in congenitally and cortically blind subjects have opposed this hypothesis. Here I review the currently available evidence.     

Information selection and use in hypothesis testing: What is a good question,and what is a good answer?

The process of hypothesis testing entails both information selection (asking questions) and information use (drawing inferences from the answers to those questions). We demonstrate that although subjects may be sensitive to diagnosticity in choosing which questions to ask, they are insufficiently sensitive to the fact that different answers to the same question can have very different diagnosticities. This can lead subjects to overestimate or underestimate the information in the answers they receive. This phenomenon is demonstrated in two experiments using different kinds of inferences (category membership of individuals and composition of sampled populations). In combination with certain information-gathering tendencies, demonstrated in a third experiment, insensitivity to answer diagnosticity can contribute to a tendency toward preservation of the initial hypothesis. Results such as these illustrate the importance of viewing hypothesis-testing behavior as an interactive, multistage process that includes selecting questions, interpreting data, and drawing inferences.     

The capacity for music: what is it, and what's special about it?

We explore the capacity for music in terms of five questions: (1) What cognitive structures are invoked by music? (2) What are the principles that create these structures? (3) How do listeners acquire these principles? (4) What pre-existing resources make such acquisition possible? (5) Which aspects of these resources are specific to music, and which are more general? We examine these issues by looking at the major components of musical organization: rhythm (an interaction of grouping and meter), tonal organization (the structure of melody and harmony), and affect (the interaction of music with emotion). Each domain reveals a combination of cognitively general phenomena, such as gestalt grouping principles, harmonic roughness, and stream segregation, with phenomena that appear special to music and language, such as metrical organization. These are subtly interwoven with a residue of components that are devoted specifically to music, such as the structure of tonal systems and the contours of melodic tension and relaxation that depend on tonality. In the domain of affect, these components are especially tangled, involving the interaction of such varied factors as general-purpose aesthetic framing, communication of affect by tone of voice, and the musically specific way that tonal pitch contours evoke patterns of posture and gesture.     

Metacognition and metarepresentation: is a self-directed theory of mind a precondition for metacognition?

Metacognition is often defined as thinking about thinking. It is exemplified in all the activities through which one tries to predict and evaluate one’s own mental dispositions, states and properties for their cognitive adequacy. This article discusses the view that metacognition has metarepresentational structure. Properties such as causal contiguity, epistemic transparency and procedural reflexivity are present in metacognition but missing in metarepresentation, while open-ended recursivity and inferential promiscuity only occur in metarepresentation. It is concluded that, although metarepresentations can redescribe metacognitive contents, metacognition and metarepresentation are functionally distinct.     

Perceptual learning of the detection of features in X-ray images: a functional role for improvements in adults' visual sensitivity?

Recent perceptual learning research has found long-term increases in the sensitivity of adults' perceptual systems. The authors examined whether such changes could partly explain improvement on tasks such as perception of medical X-ray images. Experiment 1 found experts' sensitivity to low-contrast dots in X-rays was better than novices'. Experiment 2 found a direction of luminance contrast-specific improvement in novices' detection of low-contrast dots in X-rays as a result of practice. Experiment 3 found a partly specific improvement in novices' detection of low-contrast features in real medical X-rays as a result of practice. Results suggest that experience enhances sensitivity to the critical dimensions of visual analysis for detecting abnormalities in X-ray images. Importantly, they demonstrate a real-world adaptive functional role for the long-term flexibility of sensory systems in adulthood.     

The Bergen left–right discrimination test: practice effects,reliable change indices,and strategic performance in the standard and alternate form with inverted stimuli

Several authors pointed out that left–right discrimination (LRD) tasks may be entangled with differential demands on mental rotation (MR). However, studies considering this interrelationship are rare. To differentially assess LRD of stimuli with varying additional demands on MR, we constructed and evaluated an extended version of the Bergen right–left discrimination (BRLD) test including additional subtests with inverted stickmen stimuli in 174 healthy participants (50♂, 124♀) and measured subjective reports on participants’ strategies to accomplish the task. Moreover, we analyzed practice effects and reliable change indices (RCIs) on BRLD performance, as well as gender differences. Performance significantly differed between subtests with high and low demands on MR with best scores on subtests with low demands on MR. Participants’ subjective strategies corroborate these results: MR was most frequently reported for subtests with highest MR demands (and lowest test performance). Pronounced practice effects were observed for all subtests. Sex differences were not observed. We conclude that our extended version of the BRLD allows for the differentiation between LRD with high and low demands on MR abilities. The type of stimulus materials is likely to be critical for the differential assessment of MR and LRD. Moreover, RCIs provide a basis for the clinical application of the BRLD.     

The consistency test does not–and cannot–deliver what is advertised: A comment on Francis (2013)

The statistical consistency test of  Ioannidis and Trikalinos (2007) has been used recently by  Francis, 2012a, Francis, 2012c, Francis, 2012d, Francis, 2012e, Francis, 2013, Francis, in press, to argue that specific sets of experiments show evidence of publication bias. I argue that the test is unnecessary because publication bias exists almost everywhere as property of the research process, not individual studies. Furthermore, for several reasons, the test does not support the claims made on its behalf. Instead of focusing on testing sets of experiments for publication bias, we should focus on changes to scientific culture to reduce the bias.     

Exercise is medicine… when you enjoy it: Exercise enjoyment,relapse prevention efficacy,and health outcomes for youth within a drug and alcohol treatment service

ObjectiveEvidence for the effectiveness of exercise as therapy for youth substance use disorder (SUD) is scarce. In this study, we investigated associations between exercise enjoyment and recovery outcomes for youth undergoing residential SUD treatment.MethodUsing ecological momentary assessment, each week participants reported perceptions of exercise enjoyment, relapse prevention efficacy, self-esteem, and physical health, and associations between these variables were assessed at both between- and within-person levels. There were 97 participants (age: M = 17.5, SD = 1.57, range = 14 to 21; 37 female, 60 male), with a final sample of 64 due to participants (n = 33) discontinuing treatment within 2 weeks of commencement. Of the remaining sample, 50% (n = 32) completed 3 or more assessments, 40% (n = 26) completed 5 or more, and 25% (n = 16) completed 7 or more.ResultsRelapse prevention efficacy, self-esteem, and perceived physical health increased over time in the program. Youth who, on average, enjoyed exercise more had higher self-esteem, perceived physical health, and relapse prevention efficacy than those who enjoyed it less. Additionally, on occasions when youth enjoyed exercise more (relative to their own average), they reported higher self-esteem, perceived physical health, and relapse prevention efficacy than on occasions when they reported enjoying it less.ConclusionParticipation in—and importantly, enjoyment of—exercise was linked to key health indices and predictors of relapse for youth during SUD treatment. These findings demonstrate that participation in enjoyable structured exercise may provide an important component of successful SUD treatment.     

Social skills training as a treatment for aggressive children and adolescents: a developmental–clinical integration

Social skills training (SST) has emerged as a frontline treatment approach for aggressive children and adolescents. The present review evaluates this sizable literature from a developmental–clinical perspective. More specifically, the review summarizes key developmental findings, assesses the status of existing efforts to integrate these developmental findings into clinical research, and discusses intervention implications. Summaries of developmental findings are divided into six major areas: age, gender, race, identification of intervention samples, social cognition, and peer group influences. The review indicates that efforts to incorporate developmental findings and principles into clinical research have fallen woefully short. Even the most fundamental developmental considerations were frequently overlooked. Despite these general limitations, the review highlights a number of noteworthy developmental–clinical integration attempts and concludes with a discussion of directions for future research.     

Emotion,rationality, and social identity: a theoretical–methodological proposal for a cognitive approach

Cognitive Processing - Humberto Maturana's biology of cognition and the studies of neuroscientist Antonio Damasio have proposed theories that indicate the role of emotion in cognitive...     

Recollection and familiarity for words and faces: a study comparing Remember–Know judgements and the Process Dissociation Procedure

Measures of recollection and familiarity often differ depending on the paradigm utilised. Remember–Know (R–K) and Process Dissociation Procedure (PDP) methods have been commonly used but rarely compared within a single study. In the current experiments, R–K and PDP were compared by examining the effect of attention at study and time to respond at test on recollection and familiarity using the same experimental procedures for each paradigm. We also included faces in addition to words to test the generality of the findings often obtained using words. The results from the R–K paradigm revealed that recollection and familiarity were similarly affected by attention at study and time to respond at test. However, in the case of PDP, the measures of recollection and familiarity showed a different pattern of results. The effects observed for recollection were similar to those obtained with the R–K method, whereas familiarity was affected by time to respond but not by attention at study. These results are discussed in relation to the controlled-automatic processing distinction and the contribution of each paradigm to research on recognition memory.     

Name–picture verification as a control measure for object naming: A task analysis and norms for a large set of pictures

The name–picture verification task is widely used in spoken production studies to control for nonlexical differences between picture sets. In this task a word is presented first and followed, after a pause, by a picture. Participants must then make a speeded decision on whether both word and picture refer to the same object. Using regression analyses, we systematically explored the characteristics of this task by assessing the independent contribution of a series of factors that have been found relevant for picture naming in previous studies. We found that, for “match” responses, both visual and conceptual factors played a role, but lexical variables were not significant contributors. No clear pattern emerged from the analysis of “no-match” responses. We interpret these results as validating the use of “match” latencies as control variables in studies or spoken production using picture naming. Norms for match and no-match responses for 396 line drawings taken from Cycowicz, Friedman, Rothstein, and Snodgrass (1997) can be downloaded at: http://language.psy.bris.ac.uk/name-picture_verification.html     

Efficient search for size targets on a background texture gradient: is detection guided by discontinuities in the retinal-size gradient of items?

Six visual search experiments were carried out to investigate the processing of size information in early vision. The apparent size of display items was manipulated independently of their retinal size by placing items on a textured surface which altered the perceived distance in depth of the items. Overall, these experiments demonstrate that a target item differing from non-target items in terms of apparent size can be detected efficiently. However, the pattern of results indicates that, rather than deriving apparent-size information, target detection is guided by discontinuities in the 'retinal-size gradient' of items, in particular between items at the same 'depth'. Although the arrangement of items on the texture surface strongly influenced search, this was largely due to the retinal size of items and the retinal separation between items. The implications of these experiments for the nature of the pre-attentive representation of size are discussed.     

“I know what a Muslim really is”: how political context predisposes the perceived need for an objective Muslim identity

This article explores the process by which Western Muslim young adults develop the need to experience an ‘objective’ religious identity. We interviewed 20 Western Muslim young adults born in Montreal, Berlin, and Copenhagen within the age range of 18–25, exploring their religious identity development. The interviews were semi-structured and open-ended. Thematic content analysis was used to explore patterns in their narratives. The participants disliked the perceived ethnocentric Muslim identity of their parents, which they sought to ‘purify’ for themselves from ‘cultural contamination’. There were two important elements underlying the process of religious identity objectification: experience of anti-Muslim political discourse and exposure to religious diversity in the aftermath of deterritorialisation.     

What Good is a Feminist Identity?: Women’s Feminist Identification and Role Expectations for Intimate and Sexual Relationships

Women’s feminist identification is associated with a growing list of favorable outcomes, predicting that these correlations will extend to egalitarian and assertive role expectations for committed and sexual partnerships, respectively. Surveying 165 undergraduate US women, nonfeminist passive acceptance was linked to low egalitarian expectations overall and across all seven subscales of the marriage role expectation inventory. It also was related to depressed sexual assertiveness overall and specifically in initiating sexual encounters and engaging in safe sexual practices. These negative associations were nonsignificant or positive for women with stronger feminist identification. When endorsement of passive acceptance was controlled for, the positive correlation between egalitarian and assertive expectations fell to nonsignificance, consistent with regarding nonfeminist attitudes as a confounded third common factor.     

Cultural variations on optimistic and pessimistic bias for self versus a sibling: is there evidence for self-enhancement in the west and for self-criticism in the east when the referent group is specified?

A culturally relevant framework was used to examine variations on optimistic and pessimistic bias in Westerners and Easterners. Study 1 showed that 136 European Americans compared with 159 Japanese were more likely to predict typical positive events to occur to self than to a sibling. The opposite pattern emerged in the prediction of typical negative events. Study 2 replicated these findings on the basis of predictions for atypical events in 175 European Americans and 130 Japanese. Across both studies, within-groups analyses indicated that European Americans held an optimistic bias in the prediction of positive and negative events, whereas Japanese held a pessimistic bias for negative events. These findings are taken to offer support for presumed cultural differences in self-enhancement and self-criticism between Westerners and Easterners, respectively.     

A statistical decision model for sensory discrimination which predicts Weber’s law and other sensory laws: Some results of a computer simulation

A model for visual intensity threshold discrimination is described. Simplified assumptions represent the main features of the visual afferent paths. Discriminative responses are selected centrally by a statistical decision procedure, limited by the noise level. Noise arises from the irreducible physical variability of light, from spontaneous firing, and from variations in transmission in the afferent paths. These variations will tend to be positively correlated, The model was simulated on a computer: it correctly predicts the form of the Weber function (the relation between difference threshold and background intensity) and the features of spatial and temporal “summation”, It also shows that the function relating the eentral effeet of a stimulus to its physical intensity is unlikely to be logarithmic or a power function with a small exponent.     

Framework for a new dialogue between psychoanalysis and neurosciences: is the combined neuro-psychoanalytic approach the missing link?

Freud's legacy deriving from his work The project for a scientific psychology (1895) could give a new impetus to the dialogue between psychoanalysis and neurosciences. A rapproachment phase is warrented. Based on the work of psychoanalysts who are themselves neuroscientists (such as Mauro Mancia, Martha Koukkou and Harold Shevrin) or have a long term dialogue with neuroscientists (Arnold Modell), three points of epistemological congruence are described:

1. dualism is no longer a satisfactory solution
2. cautions for the centrality of interpretation (hermeneutics)
3. the self-criticism of neuroscientists