Prolonged development of auditory skills: A role for perceptual anchoring?

Many auditory skills continue to develop beyond infancy and even into adolescence, but the factors underlying this prolonged development remain poorly understood. Of interest here is the contribution of on-line statistical learning of stimulus repetitions (anchoring) to the development of auditory spectral and temporal discrimination, as well as the potential contributions of auditory attention and working memory. Children, aged 6–13 years, as well as adults (age range: 21–33 years) were tested on auditory frequency and duration discrimination. Each type of discrimination was measured in two conditions (XAB and XXXAB) designed to afford different levels of anchoring by varying the number of repetitions of a standard stimulus (X) prior to the presentation of the test tone (A or B) in each trial. Auditory attention and working memory were also assessed. Whereas duration and frequency discrimination in either condition did not reach adult level prior to 11 years of age, the magnitude of the anchoring effect was similar across ages. These data suggest that perceptual anchoring matures prior to the attainment of adult-like discrimination thresholds. Likewise, neither attention nor working memory could account for the observed developmental trajectories. That auditory discrimination and anchoring follow dissociable developmental trajectories suggests that different factors might contribute to the development of each. We therefore conclude that although anchoring might be necessary for attaining good auditory discrimination, it does not account for the prolonged development of auditory frequency and duration discrimination in school-aged children.     

Enhanced perceptual priming for neutral stimuli in a traumatic context: A pathway to intrusive memories?

Clinical observations suggest that re-experiencing symptoms are triggered by stimuli that are perceptually similar to those present shortly before the trauma or its worst moments. Two experiments investigated the possible role of perceptual priming in this phenomenon. Volunteers (N = 28, N = 62) watched a series of "traumatic" and neutral picture stories, and completed blurred object identification (priming) and recognition memory tasks. Neutral objects that immediately preceded the "traumatic" stories were more strongly primed, but not better recognised, than objects from neutral stories. Enhanced priming predicted subsequent re-experiencing symptoms. The results support the role of perceptual priming in re-experiencing.     

Enhanced perceptual priming for neutral stimuli in a traumatic context: A pathway to intrusive memories?

Clinical observations suggest that re-experiencing symptoms are triggered by stimuli that are perceptually similar to those present shortly before the trauma or its worst moments. Two experiments investigated the possible role of perceptual priming in this phenomenon. Volunteers (N = 28, N = 62) watched a series of “traumatic” and neutral picture stories, and completed blurred object identification (priming) and recognition memory tasks. Neutral objects that immediately preceded the “traumatic” stories were more strongly primed, but not better recognised, than objects from neutral stories. Enhanced priming predicted subsequent re-experiencing symptoms. The results support the role of perceptual priming in re-experiencing.     

Do rhesus monkeys (Macaca mulatta) attribute knowledge and ignorance to others?

The ability of 4 rhesus monkeys (Macaca mulatta) to understand the causal connection between seeing and knowing was investigated. The subjects were tested to determine if they could discriminate between information provided by experimenters who randomly alternated between roles of guesser and knower. In a series of tests, the knower either hid food under 1 of 3 cups or watched as someone else hid the food. The guesser waited outside the room or covered her or his head until the food was hidden. The subjects watched this procedure occur but could not see which cup the food was hidden under. The knower pointed to the correct cup while the guesser pointed to an incorrect one. None of the macaques provided any evidence that they realized the different states of knowledge possessed by the guesser and knower. The results are consistent with the hypothesis that rhesus macaques are incapable of making inferences about the mental states of others.     

Is the Flynn effect on g?: A meta-analysis

Black/White differences in mean IQ have been clearly shown to strongly correlate with g loadings, so large group differences on subtests of high cognitive complexity and small group differences on subtests of low cognitive complexity. IQ scores have been increasing over the last half century, a phenomenon known as the Flynn effect. Flynn effect gains are predominantly driven by environmental factors. Might these factors also be responsible for group differences in intelligence? The empirical studies on whether the pattern of Flynn effect gains is the same as the pattern of group differences yield conflicting findings. A psychometric meta-analysis on all studies with seven or more subtests reporting correlations between g loadings and standardized score gains was carried out, based on 5 papers, yielding 11 data points (total N = 16,663). It yielded a true correlation of − .38, and none of the variance between the studies could be attributed to moderators. It appears that the Flynn effect and group differences have different causes. Suggestions for future research are discussed.     

Are moderate levels of stress particularly dangerous for relationship satisfaction? A conceptual replication of Tesser and Beach (1998)

The well-documented negative impact of daily stressors on relational well-being, juxtaposed with emerging evidence indicating that major stressors can have a positive impact on relational well-being, suggests that the association between stress and relational well-being may not be monotonic. Tesser and Beach originally raised this possibility in a 1998 study in which they found that the association between stress and individual well-being was linear, whereas the association with relational well-being was non-linear. The current study sought to conceptually replicate this study within the context of the COVID-19 pandemic by examining associations between stress and individual versus relational well-being, using a sample of 654 individuals who were in a committed relationship in the early weeks of the pandemic. Results were somewhat consistent with those of the original study: the association between stress and depression was linear, but the association between stress and relationship satisfaction was non-linear. However, the form of the association between stress and relationship satisfaction was different than observed in the original study. These results point toward the need to better understand how the severity of a stressor impacts relational outcomes, including the characteristics of stress that lead to stress spillover and the circumstances under which relational outcomes are resilient to high levels of stress.     

Can chimpanzees (Pan troglodytes) discriminate appearance from reality?

A milestone in human development is coming to recognize that how something looks is not necessarily how it is. We tested appearance-reality understanding in chimpanzees (Pan troglodytes) with a task requiring them to choose between a small grape and a big grape. The apparent relative size of the grapes was reversed using magnifying and minimizing lenses so that the truly bigger grape appeared to be the smaller one. Our Lens test involved a basic component adapted from standard procedures for children, as well as several components designed to rule out alternative explanations. There were large individual differences in performance, with some chimpanzees’ responses suggesting they appreciated the appearance-reality distinction. In contrast, all chimpanzees failed a Reverse Contingency control test, indicating that those who passed the Lens test did not do so by learning a simple reverse contingency rule. Four-year-old children given an adapted version of the Lens test failed it while 4.5-year-olds passed. Our study constitutes the first direct investigation of appearance-reality understanding in chimpanzees and the first cross-species comparison of this capacity.     

Uterine Transplant: A Risk to Life or a Chance for Life?

Science and Engineering Ethics - Being inherently different from any other lifesaving organ transplant, uterine transplantation does not aim at saving lives but supporting the possibility to...     

Cyberbullying: Challenges and opportunities for a research program—A response to Olweus (2012)

Olweus raises some important issues, but I argue that he underestimates the impact of cyberbullying on a research programme that he has done so much to promote. Cyberbullying has a number of distinctive features that differentiate it from traditional bullying. Cyberbullying provides a new challenge to the hard core (definitional criteria separating bullying from aggression). It also provides opportunities, in terms of a broader disciplinary base, greater permeability of age and context barriers, and new theoretical possibilities.     

Recording achievement and action planning: A basis for progression to higher education?

A questionnaire developed to establish experience of recording achievement and action planning was administered to 812 students commencing undergraduate study in 1994. While one-to-one tutorial opportunities appeared to be a key element which was associated with positive outcomes, more than one-third of the sample group reported no such opportunities. For the majority of students, recording achievement was not seen as a means of planning and managing learning. Those who participated in a process which they scored highly on criteria associated with quality practice, however, were more likely to see the process as having a role in learning management and were also more confident that they could identify achievements and present evidence for these achievements. Similarly, students involved in planning future actions were more confident when it came to setting goals within higher education. Some implications of these results for guidance practice are highlighted.     

Teaching children with autism to explain how: A case for problem solving?

Few studies have applied Skinner's (1953) conceptualization of problem solving to teach socially significant behaviors to individuals with developmental disabilities. The current study used a multiple probe design across behavior (sets) to evaluate the effects of problem‐solving strategy training (PSST) on the target behavior of explaining how to complete familiar activities. During baseline, none of the three participants with autism spectrum disorder (ASD) could respond to the problems presented to them (i.e., explain how to do the activities). Tact training of the actions in each activity alone was ineffective; however, all participants demonstrated independent explaining‐how following PSST. Further, following PSST with Set 1, tact training alone was sufficient for at least one scenario in sets 2 and 3 for all 3 participants. Results have implications for generative responding for individuals with ASD and further the discussion regarding the role of problem solving in complex verbal behavior.     

Vacuuming with my mouth?: Children's ability to comprehend novel extensions of familiar verbs

Can 6- and 8-year-olds (and adults) comprehend common instrument verbs when extended to novel situations? Participants heard eight unusual extensions of common verbs and were asked to paraphrase the verbs’ meanings. Half of the verbs used were specified instrument verbs that include the name of the instrument used to perform the action (e.g., a vacuum is used to vacuum); the other half were open instrument verbs (e.g., write) whose function can be performed with a range of objects. Results suggest that children's ability to interpret verb extensions increases with age, that open instrument verb extensions were more difficult to comprehend than specified instrument verb extensions and that performance on verb extension correlates with scores on a standardized test of language acquisition. Verb knowledge continues to develop well beyond the preschool years.     

A novel automatic procedure for measuring ocular counterrolling: A computeranalytical method to determine the eye’s roll angle while subjects work on perceptual tasks

In investigations of the perception of space, the consideration of ocular counterrolling-the movement of the eye around its visual axis in response to body movement-is crucially important. The angle of this movement must be known in order for one to determine the precise retinal coordinates of a distal object. Following transformation, this stimulus serves as a reliable cue for visual direction. The otolith organs provide information about body tilt and are responsible for ocular counterrolling. A novel, noninvasive method to measure ocular counterrolling, based on the cross-correlation of digitized video pictures of the eyes, is presented. The resolution attained was ≤ 0.1°. The computer analysis is fully automatic and fast, and it can be performed while subjects work on perceptual tasks. No direct access to the eyeballs is required. Data from 4 subjects showing the counterrolling profile in various body positions are presented.     

Dilution: atheoretical burden or just load? A reply to Tsal and Benoni (2010)

Load theory of attention proposes that distractor processing is reduced in tasks with high perceptual load that exhaust attentional capacity within task-relevant processing. In contrast, tasks of low perceptual load leave spare capacity that spills over, resulting in the perception of task-irrelevant, potentially distracting stimuli. Tsal and Benoni (2010) find that distractor response competition effects can be reduced under conditions with a high search set size but low perceptual load (due to a singleton color target). They claim that the usual effect of search set size on distractor processing is not due to attentional load but instead attribute this to lower level visual interference. Here, we propose an account for their findings within load theory. We argue that in tasks of low perceptual load but high set size, an irrelevant distractor competes with the search nontargets for remaining capacity. Thus, distractor processing is reduced under conditions in which the search nontargets receive the spillover of capacity instead of the irrelevant distractor. We report a new experiment testing this prediction. Our new results demonstrate that, when peripheral distractor processing is reduced, it is the search nontargets nearest to the target that are perceived instead. Our findings provide new evidence for the spare capacity spillover hypothesis made by load theory and rule out accounts in terms of lower level visual interference (or mere "dilution") for cases of reduced distractor processing under low load in displays of high set size. We also discuss additional evidence that discounts the viability of Tsal and Benoni's dilution account as an alternative to perceptual load.     

Enhanced memory for emotional pictures: A product of increased attention to affective stimuli?

The current experiment addressed the question, is enhanced memory for emotional pictures due to increased attention to affective stimuli? Participants viewed pairs of pictures (emotional-neutral or neutral-neutral) whilst their eye movements were recorded; participants had to decide which picture out of each pair they preferred. There was increased attention to positive pictures and decreased attention to negative images during picture viewing. Despite this, when a recognition test was given 1 week later, memory enhancements were found for negative pictures only. Moreover, although there was a general correlation between total inspection time and memory performance, this reliability was clear only for neutral pictures, and not for emotional images. The results suggest that memory advantages for emotional pictures can occur without increased attention to such images.     

Opening up legal channels for temporary migration: A way to reduce human smuggling?

The increase in emigration pressures in sending countries together with the tightening of admission requirements for legal migrants and asylum seekers in receiving countries, are said to be among the main factors driving the growth in human smuggling. For this reason, many commentators have advocated the creation of more regular channels for employment, and the introduction of temporary worker programs, especially for the low skilled to reduce human smuggling. It is often suggested that if more migrants were able to enter developed countries legally for short periods to work, fewer people would need to turn to smugglers for assistance. This article discusses some of the arguments for and against this policy approach, focusing on Europe. The article suggests that there are likely to be no easy solutions to combating people smuggling, and only a comprehensive approach, is likely to have any chance of success; such an approach should include a range of measures including greater onportunities for temporary employment.     

Response to Intervention (RtI) Model: a promising alternative for identifying students with learning disabilities?

Until recently, in the United States, the traditional way to identify students with Specific Learning Disabilities (SLD) was through the discrepancy model where student IQs were compared to their level of achievement. However, educators and researchers alike have questioned this model as a means to define and identify students with SLD. The 2004 reauthorization of the Individuals with Disabilities Education Improvement Act (IDEIA) includes the use of response to intervention (RtI) as possible alternative to the intelligence-achievement discrepancy for identifying SLD. Core components of RtI include high-quality classroom instruction, universal screening, continuous progress monitoring, research-based interventions, and fidelity of instructional interventions. In Spain, the last publication of Ley Orgánica 2/2006, May 3, of Education (LOE) uses the term, Specific Learning Disabilities (SLD), in the chapter on students with specific needs of educational support. Some Autonomous Communities in Spain like the Canary Islands region are regulating SLD identification that adds RtI as an option to use in the eligibility process. Nevertheless, this model it is still at an embryonic stage and many issues are unresolved. While no special issue can cover all of these themes and issues, the contributions included in this monograph examine relevant aspects of this approach. Indeed, this special section is an attempt to introduce in Spain an approach that could be an alternative for identifying and intervening with students who have learning disabilities.