Do noise masks terminate target processing?

Much recent research in visual information processing has employed a methodology resting on the assumption that a noise mask following presentation of a target stimulus terminates processing of that target. In the absence of appropriate controls, such a methodology is viable only insofar as an erasure theory of masking is valid. However, the phenomena from which the erasure position has derived its strongest support have been subject to alternative theoretical explanations, the most general of which is that of temporal integration. The experiment reported here tested these alternatives. Twelve subjects served in a tachistoscopic study designed to determine whether the same noise field of dots could either erase a degraded target digit or facilitate target identification through temporal integration, under both forward and backward masking paradigms. This was found to be the case, and the results were interpreted as consistent with an integration theory of masking and as incompatible with an erasure conception. The results suggested that efforts to control target processing time through display of a visual noise pattern subsequent to target presentation are methodologically inadequate when devoid of some basic control operations.     

Why do older adults have difficulty following conversations?

Age-related declines in understanding conversation may be largely a consequence of perceptual rather than cognitive declines. B. A. Schneider, M. Daneman, D. R. Murphy, and S. Kwong-See (2000) showed that age-related declines in comprehending single-talker discourse could be eliminated when adjustments were made to compensate for the poorer hearing of older adults. The authors used B. A. Schneider et al.'s methodology to investigate age-related differences in comprehending 2-person conversations. Compensating for hearing difficulties did not eliminate age-related differences when the 2 talkers were spatially separated by 9 degrees or 45 degrees azimuth, but it did when the talkers' contributions came from one central location. These findings suggest that dialogue poses more of a problem for older than for younger adults, not because of the additional cognitive requirements of having to follow 2 talkers rather than 1, but because older adults are not as good as younger adults at making use of the auditory cues that are available for helping listeners perceptually segregate the contributions of 2 spatially separated talkers.     

Do dyslexics have difficulty accessing articulatory information?

Summary Dyslexic and normal readers of the same reading age of around eight years, but of different chronological age (ten and eight years) were given an articulation accessing and a phoneme segmentation task. For the former task they had to indicate which of several schematic drawings corresponded to the position of their tongue, teeth, and lips for a given phoneme. The dyslexic children experienced great difficulty with this task while they were equal to the normal children on a simple phoneme segmentation task. These results were replicated with two further samples of dyslexic and normal children. It is hypothesized that awareness of articulation processes is an important factor in explanations of dyslexia.     

Why do older adults have difficulty with semantic fluency?

Aging involves many cognitive declines, particularly in fluid intelligence, with relative maintenance of crystallized intelligence. This paradox is evident in the language domain: lexical retrieval becomes slower and less accurate, despite well preserved vocabularies. Verbal fluency assesses both crystallized and fluid aspects of language. Semantic fluency hypothetically reflects semantic knowledge, while letter fluency putatively reflects executive functioning, which would predict a greater impact of aging on the latter. However, the opposite is typically observed.

To investigate factors contributing to such asymmetries, we examined verbal fluency in 86 adults (30-89 years). Multiple regression analyses indicated that semantic fluency depends largely on lexical retrieval speed, as well as visualization strategies to support controlled retrieval, skills which may disproportionately decline with age. By contrast, letter fluency relies heavily on vocabulary knowledge, providing some protection against age-related declines. These findings contribute to our understanding of the mechanisms of typical age-related declines in word retrieval.     

Do deaf individuals have better visual skills in the periphery? Evidence from processing facial attributes

ABSTRACT

Studies examining visual abilities in individuals with early auditory deprivation have reached mixed conclusions, with some finding congenital auditory deprivation and/or lifelong use of a visuospatial language improves specific visual skills and others failing to find substantial differences. A more consistent finding is enhanced peripheral vision and an increased ability to efficiently distribute attention to the visual periphery following auditory deprivation. However, the extent to which this applies to visual skills in general or to certain conspicuous stimuli, such as faces, in particular is unknown. We examined the perceptual resolution of peripheral vision in the deaf, testing various facial attributes typically associated with high-resolution scrutiny of foveal information processing. We compared performance in face-identification tasks to performance using non-face control stimuli. Although we found no enhanced perceptual representations in face identification, gender categorization, or eye gaze direction recognition tasks, fearful expressions showed greater resilience than happy or neutral ones to increasing eccentricities. In the absence of an alerting sound, the visual system of auditory deprived individuals may develop greater sensitivity to specific conspicuous stimuli as a compensatory mechanism. The results also suggest neural reorganization in the deaf in their opposite advantage of the right visual field in face identification tasks.     

Do older individuals adapt to their traits?: Personality–emotion relations among younger and older adults

Prominent lifespan theories posit that older adults are motivated to engage in emotion-regulation more frequently than younger adults. The present study follows from such theories and makes a novel prediction hitherto unexamined in the aging–emotion literature. Based on the idea that older adults more frequently regulate their emotions, it was predicted that traits, reflective of temperament or habit, would be less predictive of emotions among older adults (N = 60; M age = 74.9 years) than younger adults (N = 44; M age = 19.5 years). This hypothesis was confirmed across four of the Big 5 traits and, consistent with predictions, the moderating effects of age were particularly strong for negative emotions. The discussion focuses on the implications of the present findings for understanding age differences in personality, emotion, and emotion-regulation.     

Do McCollough effects provide evidence for global pattern processing?

Contingent color aftereffects (CAEs, or McCollough effects) were induced using two pairs of orthogonally related patterns (horizontal/vertical and concentric/radial) to determine whether the CAEs of the four patterns are independent. Tests using composite test patterns (like those employed by Emerson, Humphrey, & Dodwell, 1985) suggested independent aftereffects. However, tests using unitary patterns indicated additive or competing effects of the four patterns in regions where line orientations were similar, and tests isolating such regions showed clear interactions between the pattern aftereffects. The results fail to support the claim that global (rather than local) features of the patterns control these CAEs.     

Accounting for cognitive aging: context processing, inhibition or processing speed?

Age-related deficits in context processing were examined in relationship to two predominant theories of cognitive aging (the Inhibitory Deficit and Processing Speed Models). Older and younger adults completed a measure of context processing (AX Continuous Performance Test (CPT) task) as well as a computerized battery of inhibitory tasks: Stroop, garden path sentences, go no-go, and the stop-signal paradigm. Participants also completed a simple processing speed task. After controlling for baseline differences in processing speed, age effects were detected on the AX-CPT. Smaller, but significant age effects were noted on the Stroop and stop-signal tasks, but no significant age effects were found on the garden path sentence and go no-go tasks. Intertask correlations were weak, providing little evidence for a homogenous or uniform construct of inhibition. The sensitivity of the AX-CPT to cognitive aging is discussed in the context of existing theories of cognitive aging. The authors suggest that deficits in context processing and utilization may underlie cognitive aging phenomena.     

Can friendship serve as an impetus for safe driving among young drivers?

Reckless driving is a key factor in injury and death among young people, especially men, throughout the world. At this developmental stage (ages 17–24), the youngster’s behavior, including driving habits, is strongly influenced by the social discourse. Whereas previous studies have investigated the impact of concepts such as peer pressure and the number of passengers in the car, they have dealt little with the overall social relations that characterize young people, particularly, the nature of their friendships and their reflection in safe versus risky driving.Using qualitative phenomenological methodology, the present study relies on 32 semi-structured in-depth interviews to explore the elements of the relationships among young drivers in the context of driving behavior. Aristotle’s conceptualization of three types of friendship was employed as the interpretative framework. The findings reveal that a young driver’s behavior when driving with friends is associated with the different perceptions of friendship, and is gender and age sensitive. The elements of a friendship of utility (reciprocal interests, practical and beneficial interactions) were connected with safety at all ages and in both genders, and those of a friendship of virtue (responsibility, equality, concern for others) were associated with safe driving among females of all ages and among some of the older male drivers (21–24 years). In contrast, the components of a friendship of pleasure (spending leisure time together, sharing mutual interests) were related to risky and distracted driving, especially among the younger male drivers (17–19 years). It is suggested that interventions might promote safe driving among young people by fostering the positive aspects of their peer relationships.     

Do dichotic listening procedures measure lateralization of information processing or retrieval strategy?

The data from two dichotic studies, both of which evaluated spontaneously generated response strategies under free recall and one of which also manipulated retrieval strategy by instruction, supported a conception that what dichotic procedures mostly measure are response strategies—mobile and readily deployed without loss of mnemonic capability. Consequently, competitional methods which are heavily influenced by output factors appear to be unreliable as a means of evaluating input processing dominance.     

Should I Drive Today? Development of a daily driving decisions model for older adults

BackgroundOlder adults in communities make daily decisions about how to meet their transportation needs so they can access services and stay socially connected. With the aging of populations in developed countries, the travel decisions of older adults will have increasing impacts. Research studies have identified different sets of factors that contribute to certain travel decisions, but little research has been directed towards understanding how individuals select information from all available factors, what information they include in their decisions under different circumstances, and the processes they use in making their transportation decisions.MethodsThis exploratory study involved 20 men and 17 women, mean age 78.6 years (range 70–96), who drove weekly. All participants were involved in each phase of the 3-phase study. In Phase 1, a review of the literature and interviews with the participants was used to collect information, and inductive thematic analysis was employed to construct a draft conceptual model of older driver decision-making. In Phase 2, participants completed a stated preference task of written scenarios to demonstrate their decision-making strategies. Results were tabulated and used to refine a final Daily Driving Decisions model. In Phase 3, a card sorting decision task was used to test the model with participants.ResultsThe final dynamic Daily Driving Decisions Model was confirmed to describe decision processes used by the participants in making decisions about how they would meet their transportation needs. The model describes three categories of factors used in decisions, labelled Motivators, Constraint/Enablers and Context, each containing four attribute themes. A significant finding was the variable use of the same item to either constrain or enable the decision to drive depending on the variation of other factors in the scenario. Participants demonstrated use of compensatory and noncompensatory (heuristic, habitual) decision processes that were accommodated by the model.ConclusionThe proposed Daily Driving Decisions Model addresses a gap in our understanding of how older drivers make their decisions about meeting their transportation needs. The model presents a template for classifying the types of information used, ignored or discarded by older adults, and the pathways that they take to arrive at their decisions. The model provides opportunities for further research in testing the influence of other factors such as urban/rural residence, income, health status and culture on driving decisions. Further, the model can be used by practitioners to gain insight into the decision-making behaviours of individuals and to develop interventions to enhance their decision-making skills.     

Do visual processing deficits cause problem on response time task for dyslexics?

This study was set out to explore the prediction that dyslexics would be likely to have particular problems compared to control group, on response time task when 'driving' a car simulator. The reason for doing so stems from the fact that there is considerable body of research on visual processing difficulties manifested by dyslexics. The task was to drive a car and at the same time, the driver had to use either signal button on the right side of the wheel (condition 1) or a voice-activated microphone (condition 2) immediately when a road sign appears. In condition 1, the sign appears only in the mid-field zone and in condition 2, it appears in one of six possible positions in relations to the car ahead. As predicted, it was found that the dyslexics had significantly higher response time in both conditions than their controls. Dyslexics may have visual processing deficit which not only cause reading problems but also problems perceiving rapid changes in their environment such as responding on a sign when driving.     

Do age stereotypes as social role expectations for older adults influence personality development?

Age stereotypes as social role expectations for older adults were hypothesized to influence personality development in later life for specific stereotype domain x personality trait combinations. N = 965 participants aged 50–60 from the Midlife Development in the U.S. (MIDUS) study provided ratings about “people in their late sixties” in four domains at T₁ and completed a personality questionnaire at T₁ and at T₂ ten years later. Personality at T₂ was regressed on age stereotypes and personality at baseline. Age stereotypes in the domains Family/Relationships and Wisdom were related to changes in both Agreeableness and Extraversion over ten years. The findings provide tentative support for the role of positive age stereotypes in personality development in older age.     

Do university students really have difficulty in duration judgments? Comment on Okazaki and Matsuda (2008, 2010)

Reinterpretation suggests that low performance of the participants studied by Okazaki and Matsuda (2008, 2010) may have been caused by using a procedure which overloads the cognitive capacities of undergraduate students. The questions asked participants about their reasoning could have led to cognitive overload because they performed two tasks: judgment of movement duration and paying attention to what kind of knowledge should be used (alpha or beta). Some interpretations are offered referring to possible effects of training procedures for applying both kinds of knowledge.     

Do counselling supervisors want or need to have their supervision supervised? An exploratory study

In response to a survey of counselling supervisors, 70 practitioners provided information about their practice as supervisors of counsellors and supervisors of supervisors. Questions were asked about the practice of supervision for supervision and attitudes towards the BAC Code of Ethics and Practice for Supervisors requirement that supervisors have access to supervision for their supervisory work. All but six of the respondents claimed to have supervision for supervision. In response to questions about the helpfulness, general importance, ethical importance and desirability of supervision for supervision, for which a bipolar visual analogue scale was provided, mean scores were all above 70%, indicating that there was considerable satisfaction with supervision for supervision requirements. Factor analysis revealed only one factor including all four questions. Questions were asked about contracts with supervision supervisors. A total of 55.7% used the same supervisor for their clinical work and supervision. In response to a question about issues raised in supervision, four categories accounted for the majority of comments: boundaries, competence of supervisees, training and ethics.     

Stroop-like effects for monkeys and humans: processing speed or strength of association?

Abstract— Stroop-like effects have been found using a variety of paradigms and subject groups In the present investigation, 6 rhesus monkeys (Macaca mulatta) and 28 humans exhibited Stroop-like inserference and facilitation in a relativenumerousness task Monkeys, like humans, processed the meanings of the numerical symbols automatically—despite the fact that these meanings were irrelevant to task performance These data also afforded direct comparison of interpretations of the Stroop effect in terms of processing speed versus association strength These findings were consistent with parallel-processing models of Stroop-like interference proposed elsewhere, but not with processing-speed accounts posited frequently to explain the effect