Reading involves the dynamic construction of a mental model corresponding to the situation described in a text. This representation draws on the semantic and grammatical content of the text and also involves inferences for unstated information and the sequencing of events in time. In the current study, an eye-tracking methodology was used to explore the critical role of grammatical aspect in this process. The results showed that, following an event expressed in imperfective aspect, the reading of a necessarily later event was slowed compared to when the earlier event was expressed in perfective aspect. However, the effect depended on world knowledge—when the first event was typically of short duration, it did not evoke an "ongoing" interpretation to the same degree compared to when it was of long duration. The results highlight comprehenders' use of world knowledge and subtle grammatical cues in the representation of event information during on-line reading.

While neuropsychological deficits have been reported in healthy individuals who use cannabis, data in patients with multiple sclerosis (MS) are lacking. Given that MS is associated with cognitive deterioration, the aim of this study was to determine the cognitive effects of inhaled or ingested cannabis in this population. Fifty MS patients (25 cannabis users and 25 non-users) completed the Minimal Assessment of Cognitive Function in MS battery of neuropsychological tests. Cannabis users had significantly poorer performance on measures of information processing speed, executive functions, and visuospatial perception, and were twice as likely to be classified as globally cognitively impaired. Similar results were found after controlling for potential confounding variables. This study provides evidence that prolonged cannabis use in MS patients is associated with poorer performance on cognitive domains commonly affected in this population. The therapeutic benefits patients may derive from using cannabis should be weighed against the associated cognitive side-effects.

Working memory (WM), which is essential for many academic skills, has been found to predict inattentive behaviours and is a common deficit in ADHD and LD. Recent studies have suggested that WM can be improved by intensive and adaptive computerized training. The purpose of this study is to investigate the effects of a WM training program on WM, attention, behaviour and academics in adolescents with severe LD/ADHD. A total of 60 12 to 17 year olds with ADHD/LD were randomised to one of two computerized intervention programs: working memory training or math training and evaluated before and at three weeks after completion. Adolescents in the WM training group showed greater improvements in some measures of WM than those in the Math training group, but no training effects were observed on any other measures. Findings are discussed in the context of theoretical and practical implications of WM training.

The current research examined whether nonword repetition (NWR) tasks, designed to measure phonological short-term memory, are also influenced by familiarity with lexical representation of a given language. In Study 1, children with and without exposure to Hebrew were administered a NWR task based on the Hebrew language structure (HNWR). On the HNWR, participants with Hebrew exposure significantly outperformed participants who had no familiarity with any Semitic language. This indicates that long-term phonological and lexical knowledge can be used to aid NWR performance. Study 2 investigated whether a NWR task based on a foreign language could minimize the lexicality effect. English speaking undergraduate students rated the less familiar HNWR task to be lower in wordlikeness than English-like NWR tasks. These findings demonstrate that regardless of language background a NWR task based on an unfamiliar language structure is a more valid measure of the phonological processing skills required for vocabulary acquisition.

This study examined the significance of perceived parent and teacher support for autonomy and responsiveness, along with perceptions of democratic social organization, in the development of conceptions of children’s rights. Relations between these family and school environments and adolescents’ psychological well-being were also examined and a contrast between urban and rural settings within mainland China was included. Current findings suggest that Chinese adolescents display patterns of children’s rights attitudes similar to those found in Western settings. Different possible pathways of family and school environmental impact on children’s rights attitudes are found and explored. Current findings support psychological models that propose that the promotion of autonomy and responsiveness is critical to adolescents’ psychological well-being across cultures. Moreover, these findings provide strong evidence that features of democratic environments (e.g., mutual respect between parents and children, opportunities for children to express their opinions, shared decision making) are relevant to people in non-Western cultures.

Body schema is indispensable for sensorimotor control and learning, but it remains unclear whether it is associated with cognitive functions. Data from patients with spatial neglect support this view; yet observations in healthy participants are inconsistent. Here I conducted two sets of experiments examining influences of trunk position: the first probed attention and spatial working memory using a change detection task and a two-back task; the second used different versions of the Posner paradigm to examine whether head-on-trunk position governs disengagement of attention. In none of the experiments did I observe that trunk turns altered performance in the left versus right visual field in an ipsiversive fashion as reported in neglect. Nevertheless, I found that trunk-right position improved performance at eccentric locations of the visual field. The data are inconsistent with previous findings of head-on-trunk effects in normal participants. Further studies are required to clarify these discrepancies.

Objectives: To demonstrate that at 6-months post-cessation of cognitive behaviour therapy (CBT) adapted for acquired brain injury (ABI), (1) patients maintain psychological benefits, (2) coping strategy selection improves, (3) community integration is enhanced, and (4) benefits are observed in both face-to-face and telephone administrations. Methods: Participants. Seventeen ABI patients with elevated psychological distress. Outcome Measures. Pre-treatment, post-treatment and 6-month follow-up performance on the Symptom Checklist-90-revised (SCL-90-R), Depression, Anxiety Stress Scales (DASS-21), Community Integration Questionnaire (CIQ) and the Ways of Coping-Revised Questionnaire (WOC-R). Procedures. Eleven CBT sessions provided in group, face-to-face format or individually by telephone. Results: For face-to-face and telephone groups, psychological distress was significantly reduced from pre-treatment to 6-months follow-up: DASS-21 (t16= 7.32, p <.000); SCL-90-R (t16= 6.22, p <.000). Community integration (t16= -6.15 p<.000) and problem-focused coping (t16= -3.67, p<.01) were also significantly enhanced. Conclusion: CBT adapted for patients with ABI carries robust benefits even 6-months after treatment.

This study investigated the neuroplastic changes that accompany speech identification training using magnetoencephalography (MEG). Participants completed three practice sessions over two consecutive days. In the morning group, practice occurred in the morning and evening of the first day, and in the morning of the next day; whereas, in the evening group, practice occured in the evening of the first day, and in the morning and evening of the second day. In both groups, behavioural improvement between the first session and last session was comparable. Neuromagnetic data showed practice-related changes in N1m amplitude between the first and last sessions. A time-of-day (TOD) of practice effect was found for P2m mean amplitude. In both groups, P2m-related changes with practice were greater when consecutive sessions occurred between days than within a day. The results are consistent with the proposal that task-related changes in the P2m wave are an index of perceptual learning.

Chronotype describes the daily rhythm of an individual’s performance capability as it changes through the day. It is defined using the Horne-Östberg Morningness-Eveningness Questionnaire (MEQ) which assesses time-of-day preference; or the Munich ChronoType Questionnaire (MCTQ) which indicates sleep timing parameters. My hypothesis was that chronotype predominantly reflects an individual’s perceived daily rhythm in executive function. We tested this by comparing MEQ and MCTQ with the University of Toronto Inventory of Morningness and Eveningness (UTIME) Questionnaire which examines performance on scenarios requiring cognitive, physical, and/or emotional responses. Highest correlations were found between MEQ and UTIME tasks with high executive demand. The same UTIME tasks were also correlated with MCTQ (mid-sleep, free days), although the correlations were consistently lower than UTIME versus MEQ. Correlations among UTIME tasks and MCTQ (mid-sleep, workdays) were not linked to executive demand. Chronotype appears to reflect the perception of peak executive ability independently of sleep pattern.

Knowledge of the literature pertaining to patterns of performance in normal individuals is essential if we are to understand intraindividual variability in neurocognitive test performance in neuropsychiatric disorders. Twenty-five healthy individuals with a high-level of education were evaluated on a short neuropsychological battery which spanned several cognitive domains. ---Results indicated that cognitive abilities are not equally distributed within a sample of healthy, high-level functioning individuals. This may be of interest to neuropsychologists who might base clinical inference about the presence of cerebral dysfunction, at least in part, on marked variation in a patient’s level of cognitive test performance. The practice of deductive reasoning in clinical neuropsychology may be prone to false-positive conclusions about cognitive functioning in neuropsychiatric disorders where base-rates of cognitive impairments are low and pre-existing educational achievements are high.