How does experience change cognition? Evaluating the evidence

Schellenberg (2011) reports the results of an experiment to determine the cause of the association between music training and intelligence quotient (IQ) in children. There was no difference between trained and untrained groups in a set of executive function tasks and no evidence that executive function mediated the effects of music training on IQ, since music training and IQ remained related after controlling for executive function performance. Therefore, he concludes that children with high IQs are more likely to take music lessons, assigning responsibility for the reported correlation to genetic differences in intelligence. The present article challenges that conclusion by discussing the nature of the experience represented by children in the two groups, the validity of the tasks used to measure executive functioning, and the logic of the conclusion from the reported data.     

How does speed change affect induced motion?

The nature of a recently reported effect of speed on induced motion was investigated. Wallach and Becklen (1983) had found that the extent of induced motion decreases linearly with increases in presentation speed. We found that this speed effect occurred only in induced motion and not under conditions in which configurational change, which is responsible for induced motion, operated veridically. It took place whether configurational change was in conflict with ocular pursuit or with image displacement, and seemed to consist in diminished effectiveness of configurational change when it competed with one of these subject-relative stimuli.     

The mirror neuron system: grasping others’ actions from birth?

In the adult human brain, the presence of a system matching the observation and the execution of actions is well established. This mechanism is thought to rely primarily on the contribution of so-called 'mirror neurons', cells that are active when a specific gesture is executed as well as when it is seen or heard. Despite the wealth of evidence detailing the existence of a mirror neuron system (MNS) in the adult brain, little is known about its normal development. Yet, a better understanding of the MNS in infants would be of considerable theoretical and clinical interest, as dysfunctions within the MNS have been demonstrated in neurodevelopmental disorders such as autism spectrum disorder. Arguments in favor of an innate, or very early, mechanism underlying action understanding mainly come from studies of neonatal imitation, the existence of which has been questioned by some. Here, we review evidence suggesting the presence of an MNS in the human child, as well as work that suggests, although indirectly, the existence of a mechanism matching the perception and the execution of actions in the human newborn.     

How does the visual system distinguish between illuminance and reflectance?

The experiments in which the strengths of pattern and of fusion differing in kind from brightness were used as measures indicated that the visual system could distinguish between illuminance and reflectance. From this result and an observation of gray papers by a microscope, it is assumed that luminance has two aspects, one refers to the macroscopic density of photons and another to the proportion of the reflected microscopic areas to the absorbed microscopic areas so that brightness constancy occurs in relation to each of the patterns of the various sizes from a macroscopic pattern visible to the naked eye to a microscopic pattern not visible. It is also mentioned that the strength of fusion is rare but promising as a measure for analyzing brightness.     

How does social essentialism affect the development of inter‐group relations?

Psychological essentialism is a pervasive conceptual bias to view categories as reflecting something deep, stable, and informative about their members. Scholars from diverse disciplines have long theorized that psychological essentialism has negative ramifications for inter‐group relations, yet little previous empirical work has experimentally tested the social implications of essentialist beliefs. Three studies (N = 127, ages 4.5–6) found that experimentally inducing essentialist beliefs about a novel social category led children to share fewer resources with category members, but did not lead to the out‐group dislike that defines social prejudice. These findings indicate that essentialism negatively influences some key components of inter‐group relations, but does not lead directly to the development of prejudice.     

How does the hippocampus contribute to memory?

Recently, Wirth et al. reported that hippocampal neurons signal the acquisition of new associations by altering the selectivity of their responses to crucial stimuli. The course of these changes was gradual, with some neurons recruited before, others at the time of, and yet others shortly after learning. These observations suggest the hippocampus might contribute to memory by identifying consistencies across experiences that constitute important new associations.     

Persuasion in school-aged children: How does it change if the persuadee is the mother or the peer?

The present study was designed to verify how school-aged children’s persuasive tactics changed if the persuadee was the mother or the peer. One hundred and forty-nine children at two grade levels (4th and 5th) were enrolled in the study. Persuasive strategies were investigated using pictures representing two common situations in which each child had to convince his/her playmate and his/her mother to obtain a toy. As predicted, with mothers children engaged more frequently in strategies aimed at encouraging cognitive reappraisal of the situation and offering guarantees. Conversely, with the peers, children adopted a greater variety of persuasive strategies, engaging in lower-order tactics. Implications and limitations of the study were discussed.     

How does dysfunctional thinking decrease during recovery from major depression?

Decreased dysfunctional thinking in recovering depressed patents could reflect predominantly (a). reduced access to dysfunctional schemas or (b). increased metacognitive monitoring of dysfunctional schematic products. Twenty acutely depressed patients, 20 partially remitted depressed patients, and 20 controls were compared on tasks primarily reflecting one or the other of these processes. On both tasks, acutely depressed patients differed significantly from controls. Partially remitted patients resembled acutely depressed patients on the task assessing dysfunctional schema access but resembled controls on the metacognitive monitoring task. Results suggest that reduced dysfunctional thinking associated with partial remission is mediated primarily by increased metacognitive monitoring of dysfunctional cognitive products rather than reduced access to dysfunctional schemas.     

How does commuting behavior change due to incentives? An empirical study of the Beijing Subway System

This study examines the impact of incentives on commuters’ travel behavior based upon a questionnaire survey conducted with respect to the Beijing Subway System. Overall, we find that offering incentives to commuters, particularly fast food restaurant-related services and reduced ticket fares, has a positive influence on avoiding the morning rush hour. Furthermore, by using an interaction analysis, we discover that a flexible work schedule has an impact on commuters’ behavior and the efficiency of the subway system. Finally, we recommend two possible policies to maximize the utility of the subway system and to reduce congestion at the peak of morning service: (1) a set of incentives that includes free wireless internet service with a coupon for breakfast and a discount on ticket fares before the morning peak and (2) the introduction of a flexible work schedule.     

How does the manipulation of time pressure during soccer tasks influence physical load and mental fatigue?

This study aimed to analyze whether having more or less time to solve soccer tasks influences physical load and mental fatigue. 48 semi-professional soccer players, from teams in national leagues participated (M_age = 22.4, SD_age = 2.25). They carried out 2 sessions with 4 tasks in each session. In one session, there was more time available; in the other, there was less time available. GPS technology was used to measure physical load, and an adaptation of NASA and Visual Analog Scale to measure mental load and mental fatigue. A related-samples T-test and magnitude based on inference were used to determine the possible effect. Soccer players reported that tasks with less available time were more mentally demanding. Moreover, less available time to solve the tasks significantly increased players’ RPE and decreased their Heart Rate and external physical load. Therefore, the available time significantly affects mental and physical load and mental fatigue.     

Do infants provide evidence that the mirror system is involved in action understanding?

The mirror neuron theory of action understanding makes predictions concerning how the limited motor repertoire of young infants should impact on their ability to interpret others’ actions. In line with this theory, an increasing body of research has identified a correlation between infants’ abilities to perform an action, and their ability to interpret that action as goal-directed when performed by others. In this paper, I will argue that the infant data does by no means unequivocally support the mirror neuron theory of action understanding and that alternative interpretations of the data should be considered. Furthermore, some of this data can be better interpreted in terms of an alternative view, which holds that the role of the motor system in action perception is more likely to be one of enabling the observer to predict, after a goal has been identified, how that goal will be attained.     

Empathic development during adolescence: religiosity,the missing link?

While theories regarding the development of empathy hypothesise increased empathy scores during adolescence, data among adolescent samples tend not to find such a relationship. The present paper proposes religiosity as the missing link to account for this discrepancy between theory and findings, on the theory that decreasing religiosity during adolescence is likely to depress empathy scores at precisely the same time as increasing cognitive skills are likely to enhance empathy development. Data from 569 school children, aged 11–17 years, who completed both the Junior I₆ Empathy Scale and the Attitude towards Religion Scale ASC4B, demonstrate that, while there is no direct correlation in the sample between age and empathy, there is a significant positive correlation between age and empathy after controlling for differences in levels of religiosity.     

Do parent-child relationships change during puberty?

This article reviews changes in parent-child relationships during puberty, emphasizing the developmental processes that might be implicated in these changes. Evidence suggests increases in conflict and less warm interactions in relationships between parents and children during puberty. Changes are assumed to be short term, although little longitudinal research has directly addressed the issue of long-lasting effects. Other developmental changes occurring for the adolescent, the parent, or both (such as social cognitive or self-definitional change), as well as other relationship changes, personality characteristics, and the sheer number of life events or transitions have all been posited as potential contributors to changes in the parent-child relationship for young adolescents. These possible contributors, however, have seldom been studied in conjunction with pubertal changes. Such integrative research is necessary to test various models through which puberty, social relationships, social cognitive, self-definitional, and other processes influence one another and are influenced by one another during the transition to adolescence.     

How did compulsory personal therapy during counselling training influence personal and professional development?

Aim: This study explored the influence of personal therapy on professional and personal development in a qualitative investigation. Method: Six semi‐structured interviews were conducted and analysed using Interpretative Phenomenological Analysis (IPA). Findings: All participants recognised the important influence of personal therapy on personal growth. Influences on personal development were experienced in the physical, cognitive, emotional and spiritual worlds of participants. It was felt that skills, a better understanding of therapeutic relationships, and general support, enhanced professional development. Conclusion: In combination this can lead to an increase in self‐awareness and thus a more effective professionalism in counsellors.     

How does the heel-off posture modify gait initiation parameter programming?

The authors studied the adjustment of the 2 distinct known expressions of gait velocity, the velocity of the center of gravity (CG) and the velocity of the center of foot pressure (CP) at the end of the 1st step in 2 experimental situations: natural gait initiation (the control situation, CS) and heel-off gait initiation (the test situation, TS). Gait was initiated by 7 healthy participants, from an erect spontaneous posture in the CS and from a posture with heels raised in the TS, on a force platform at 3 self-selected speed conditions. Biomechanical data from the force platform were collected in both experimental situations, and the authors used a particular gait analysis based on the differential method of Y. Brenière (2003) in order to approach velocity modulation by means of step length and frequency. Results showed that CG and CP velocities were adjusted differently during heel-off gait initiation than during natural gait initiation. CP velocity, as compared with CG velocity, was overestimated in TS. Results also established the relevance of the expression of step velocity by means of step length and frequency: The central nervous system, taking into account the specific postural constraints of each experimental situation, uses a reference value and a regulating parameter to modulate step velocity. Moreover, the contributions of 1st step length and frequency to the expression of step velocity in TS and CS were different. Thus, a specific locomotor behavior corresponds to a given experimental situation that is characterized by its own initial biomechanical constraints.