Broad Range Of Cognitive Abilities Research Articles

The effects of binge drinking on attention in young adults

IntroductionAlcohol binge drinking is highly prevalent among young adults. While research has established the neurotoxic effects of general alcohol consumption, binge drinking presents unique deleterious effects on the brain through the acute intoxication and withdrawal cycle. The detrimental impacts of binge drinking have been reported across a broad range of cognitive abilities in young adults, however, the research regarding its relationship to attention is mixed. This study investigates the relationship between binge drinking and attention performance in young adults. Moreover, there is evidence to suggest that males and females are uniquely impacted by the neurotoxic effects of binge drinking, so the present study tests the moderating role of sex, as well as the influence of earlier age of binge drinking onset.MethodsOne-hundred and five university students were recruited for the study. After collecting socio-demographic, and alcohol use information, participants completed four cognitive tasks designed to measure the three attention networks according to the Attention Network Theory; alerting, orienting, and executive control. Linear hierarchical regressions were used to predict performance with binge drinking score, sex and age of first binge drinking session as predictors.ResultsBinge drinking, sex, and age of first binge drinking session did not predict attention impairment, nor did sex moderate the relationship, at least in the selected cognitive tasks. The tasks used to measure attention did not relate in the expected manner.DiscussionWhile there were no differences in attention performance between those who binge drink and controls in this study, the relationship between binge drinking and attention impairments in young adults may be more nuanced and future research directions are suggested. Theoretical and practical implications of these findings are discussed.

Cross-Validating the Executive Errors Scale of the Repeatable Battery for the Assessment of Neuropsychological Status.

The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) was developed to briefly measure a broad range of cognitive abilities, but it initially lacked a scale to evaluate executive functioning. Robert Spencer and colleagues recently created an Executive Errors scale (RBANS-EE) that quantified executive functioning (EF) errors committed during four RBANS subtests: List Learning, Semantic Fluency, Coding, and List Recall. In the present paper we cross-validated the RBANS-EE with a sample of 234 U.S. military veterans (M AGE = 67.2, SD = 11.5years; M EDUCATION = 13.3, SD = 2.4years) who completed the RBANS and various EF criterion measures as part of neuropsychological assessments they underwent during their clinical care. We found the RBANS-EE to be significantly correlated with most of the criterion EF measures. The RBANS-EE scale demonstrated modest ability to classify EF impairment at mild and severe levels; and, similarly, the RBANS-EE was modestly capable of accurately classifying those veteran respondents who were determined to have or to not have a neurocognitive disorder. Overall, the RBANS-EE can be quickly calculated, adds no administration time to an RBANS assessment, and yields useful scores to screen for EF dysfunction without replacing standalone EF tests.

High treatment resistance is associated with lower performance in the Stroop test in patients with obsessive-compulsive disorder.

Around 50% of the patients with obsessive-compulsive disorder (OCD) are resistant to treatment, and patients with OCD show alterations in a broad range of cognitive abilities. The present study investigated the links between treatment-resistance, executive and working memory abilities, and the severity of OCD symptoms among 66 patients with OCD. The patients performed seven tests gauging their executive functions and working memory and filled in questionnaires for OCD severity and insight into their pathology. In addition, the executive and working memory abilities of a subset of these patients were compared with those of individually matched control participants. In contrast with previous studies, patients' treatment resistance was evaluated by considering the clinical outcomes of all the treatments that they received during the course of their disease. Higher treatment resistance was associated with lower performance in one particular executive test, the Stroop test, which assessed patients' ability to inhibit prepotent/automatic responses. Older age and more severe OCD symptoms were also associated with higher treatment resistance. Regardless of OCD severity, the patients displayed small to moderate deficits across most components of executive functions compared to control participants. Interestingly, patients with OCD took more time than control participants to perform speeded neuropsychological tests but never made more errors. Altogether, this study shows that the treatment-resistance of patients with OCD may be reliably quantified over the course of years and treatments using Pallanti and Quercioli's (2006) treatment resistance-related scales. The data suggest that the Stroop test could be used clinically to anticipate treatment outcomes in to-be-treated patients.

Cognitive Control Challenge Task Across the Lifespan.

Meeting everyday challenges and responding in a goal-directed manner requires both the ability to maintain the current task set in face of distractors—stable cognitive control, and the ability to flexibly generate or switch to a new task set when environmental requirements change—flexible cognitive control. While studies show that the development varies across individual component processes supporting cognitive control, little is known about changes in complex stable and flexible cognitive control across the lifespan. In the present study, we used the newly developed Cognitive Control Challenge Task (C3T) to examine the development of complex stable and flexible cognitive control across the lifespan and to gain insight into their interdependence. A total of 340 participants (229 women, age range 8–84 years) from two samples participated in the study, in which they were asked to complete the C3T along with a series of standard tests of individual components of cognitive control. The results showed that the development of both stable and flexible complex cognitive control follows the expected inverted U-curve. In contrast, the indeces of task set formation and task set switching cost increase linearly across the lifespan, suggesting that stable and flexible complex cognitive control are subserved by separable cognitive systems with different developmental trajectories. Correlations with standard cognitive tests indicate that complex cognitive control captured by the C3T engages a broad range of cognitive abilities, such as working memory and planning, and reflects global processing speed, jointly suggesting that the C3T is an effective test of complex cognitive control that has both research and diagnostic potential.

Maternal Depression Trajectories Relate to Youths’ Psychosocial and Cognitive Functioning at Adolescence and Young Adulthood

This study evaluated how patterns of mothers' depressive symptoms across their child's childhood relate to children's psychosocial adjustment at adolescence and young adulthood and to cognitive functioning at adolescence. Depressive symptoms were measured in 1,273 mothers when their children were 1, 5, 10, and 14.6 years of age. Children (53.5% male; n = 1,024) completed the Youth Self-Report at adolescence (M = 14.6y), and the Adult Self-Report in young adulthood (M = 20.5y; n = 817) to assess internalizing and externalizing symptoms. Adolescents also completed standardized cognitive tests to assess verbal and mathematical skills. Growth mixture modeling analyses identified four patterns of maternal depressive symptom trajectories: infrequent (55%), increasing at adolescence (20%), decreasing at adolescence (14%), and chronic severe (11%). Results indicated that exposure to maternal depression of any duration, severity or time period during childhood portended higher levels of externalizing and attention problems at both adolescence and adulthood and higher levels of internalizing problems at adulthood. Adolescents whose mothers had chronic severe depressive symptoms had lower language, vocabulary, reading comprehension and mathematical test scores than youth whose mothers had stable infrequent depressive symptoms. Findings illustrate the significance and long-term ramifications of mothers' depressed mood for their children's mental and psychosocial health into adulthood. Findings also demonstrate that the lower cognitive abilities among children of severely depressed mothers persist beyond childhood and pertain to a broad range of cognitive abilities.

Incidence, gender influence, and neuropsychological predictors of all cause dementia in the Faroe Islands-the Faroese Septuagenarian cohort.

Using the Faroese Septuagenarian cohort, we aimed to describe the incidence of dementia and assess the validity of neurocognitive tests to predict subsequent dementia diagnosis. In this population-based cohort, 713 Faroese septuagenarians aged 70-74years without dementia, underwent clinical and neuropsychological examinations. After 10-years of follow-up, information was collected on all participants referred for cognitive evaluations and diagnosed with dementia. Incidence rates were calculated and presented with 95% confidence intervals (CIs), assuming a Poisson distribution. We then performed discriminant analysis to determine the best set of neuropsychological tests to identify those who would develop dementia. Over the 10-years, 65 participants (9.1%) were diagnosed with dementia, with a 10-year incidence rate of 1063 cases per 100,000 person years (95% CI 825, 1343). Women had a greater incidence than men (incidence rate ratio (IRR) = 1.58; 95% CI 0.93, 2.71). After stepwise selection, gender and six neuropsychological measures were selected to discriminate between those who would and would not develop dementia. Overall, the model was able to correctly identify 82% of those who would not develop dementia (specificity) and 71% of those who would (sensitivity). These results indicate that among a greater number of tests covering a broad range of cognitive abilities, tests reflecting verbal and visual learning and recall, visuospatial function, attention, and encoding into and retrieval from long-term memory may be helpful in identifying patients in the pre-symptomatic phase of dementia. Thus, helping care-givers identify patients at a higher risk of developing dementia and adjusting management of care accordingly.

Miniature spiders (with miniature brains) forget sooner

Miniature animals have tiny brains and should therefore face cognitive limitations. There is little supporting evidence for this expectation, however. We focused on memory information content and retention time, which likely subtend a broad range of cognitive abilities. Our study species, a web spider, allowed us to use a simple assay of working memory: how spiders search for prey they have captured and lost. We used an ontogenetic approach, taking advantage of variation in body size and the concomitant variation in brain size across instars in a single species. This approach eliminates possible confounding variation from species differences in ecology. Small spiders were the most highly motivated to search for lost prey and made the clearest discrimination of prey size. However, when we introduced a delay between memory formation and memory use, search time decreased more steeply in small spiders than in large spiders. Small spiders also performed less additional searching after their primary bout. Thus, the retention of working memory, but not its content, was limited in small spiders with small brains. We suggest that animals that evolve miniature sizes sacrifice not the ability to perceive and acquire information, but rather the ability to retain information over time in working memory. This may, in turn, limit their ability to relate behavioural decisions to their consequences.

Feasibility of a web-based neurocognitive battery for assessing cognitive function in critical illness survivors.

PurposeTo assess the feasibility of using a widely validated, web-based neurocognitive test battery (Cambridge Brain Sciences, CBS) in a cohort of critical illness survivors.MethodsWe conducted a prospective observational study in two intensive care units (ICUs) at two tertiary care hospitals. Twenty non-delirious ICU patients who were mechanically ventilated for a minimum of 24 hours underwent cognitive testing using the CBS battery. The CBS consists of 12 cognitive tests that assess a broad range of cognitive abilities that can be categorized into three cognitive domains: reasoning skills, short-term memory, and verbal processing. Patients underwent cognitive assessment while still in the ICU (n = 13) or shortly after discharge to ward (n = 7). Cognitive impairment on each test was defined as a raw score that was 1.5 or more standard deviations below age- and sex-matched norms from healthy controls.ResultsWe found that all patients were impaired on at least two tests and 18 patients were impaired on at least three tests. ICU patients had poorer performance on all three cognitive domains relative to healthy controls. We identified testing related fatigue due to battery length as a feasibility issue of the CBS test battery.ConclusionsUse of a web-based patient-administered cognitive test battery is feasible and can be used in large-scale studies to identify domain-specific cognitive impairment in critical illness survivors and the temporal course of recovery over time.

Parent-rating vs performance-based working memory measures: Association with spoken language measures in school-age children

Working memory (WM) assessment is often part of cognitive-linguistic test batteries. The author examined the relationship between parent rating of WM functioning and children’s performance-based WM, and the relationship of each with receptive and expressive spoken language measures. Study participants were eighty-three 7- to 11-year-old children. The sample represented a broad range of cognitive abilities. No participating child had frank neurological or intellectual disabilities, autism, fluency disorder, or hearing loss. Parents completed a standardized executive function rating scale that included a WM subscale. Children completed a standardized WM task and an experimental WM task. Children also completed six standardized language measures. Results showed that there was no correlation between parent rating and either of the performance-based WM tasks as well as the composite WM performance score. Parent rating of WM functioning was not related to any of the language scores whereas the composite WM performance score showed significant links with language abilities. Although parent rating and performance-based WM measures are designed to reflect the same cognitive construct, they are not correlated. Potential reasons for the findings and implications of using parent-rating and performance-based WM measures in school-age children are discussed.

Robots As Intentional Agents: Using Neuroscientific Methods to Make Robots Appear More Social.

Robots are increasingly envisaged as our future cohabitants. However, while considerable progress has been made in recent years in terms of their technological realization, the ability of robots to interact with humans in an intuitive and social way is still quite limited. An important challenge for social robotics is to determine how to design robots that can perceive the user’s needs, feelings, and intentions, and adapt to users over a broad range of cognitive abilities. It is conceivable that if robots were able to adequately demonstrate these skills, humans would eventually accept them as social companions. We argue that the best way to achieve this is using a systematic experimental approach based on behavioral and physiological neuroscience methods such as motion/eye-tracking, electroencephalography, or functional near-infrared spectroscopy embedded in interactive human–robot paradigms. This approach requires understanding how humans interact with each other, how they perform tasks together and how they develop feelings of social connection over time, and using these insights to formulate design principles that make social robots attuned to the workings of the human brain. In this review, we put forward the argument that the likelihood of artificial agents being perceived as social companions can be increased by designing them in a way that they are perceived as intentional agents that activate areas in the human brain involved in social-cognitive processing. We first review literature related to social-cognitive processes and mechanisms involved in human–human interactions, and highlight the importance of perceiving others as intentional agents to activate these social brain areas. We then discuss how attribution of intentionality can positively affect human–robot interaction by (a) fostering feelings of social connection, empathy and prosociality, and by (b) enhancing performance on joint human–robot tasks. Lastly, we describe circumstances under which attribution of intentionality to robot agents might be disadvantageous, and discuss challenges associated with designing social robots that are inspired by neuroscientific principles.

Potential Bedside Utility of the Clock-Drawing Test in Evaluating Rapid Therapeutic Response in the Natural Course of Schizophrenia: A Preliminary Study

The Clock-Drawing Test (CDT) is a brief, relatively time-efficient, easy to administer at bedside, and well-proven cognitive screening test that assesses a broad range of cognitive abilities in stroke, delirium, and dementia. However, challenges of comprehensive therapeutic outcome evaluations in schizophrenia can also be potentially overcome using CDT. The authors aimed to measure the therapeutic outcome using CDT in 101 schizophrenia patients, irrespective of their diagnostic subtypes. A repeated measures analysis of variance found that improvements on CDT and the Positive and Negative Syndrome Scale were closely correlated, reflecting critical information about therapeutic response measures in schizophrenia.

Loneliness, depression and cognitive function in older U.S. adults.

To examine reciprocal relations of loneliness and cognitive function in older adults. Data were analyzed from 8382 men and women, age 65 and older, participating in the US Health and Retirement Study from 1998 to 2010. Participants underwent biennial assessments of loneliness and depression (classified as no, low or high depression) determined by the Center for Epidemiologic Studies Depression scale (8-item version), cognition (a derived memory score based on a word list memory task and proxy-rated memory and global cognitive function), health status and social and demographic characteristics from 1998 to 2010. We used repeated measures analysis to examine the reciprocal relations of loneliness and cognitive function in separate models controlling sequentially and cumulatively for socio-demographic factors, social network, health conditions and depression. Loneliness at baseline predicted accelerated cognitive decline over 12 years independent of baseline socio-demographic factors, social network, health conditions and depression (β = -0.2, p = 0.002). After adjustment for depression interacting with time, both low and high depression categories were related to faster cognitive decline and the estimated effect of loneliness became marginally significant. Reciprocally, poorer cognition at baseline was associated with greater odds of loneliness over time in adjusted analyses (OR 1.3, 95% CI (1.1-1.5) p = 0.005), but not when controlling for baseline depression. Furthermore, cognition did not predict change in loneliness over time. Examining longitudinal data across a broad range of cognitive abilities, loneliness and depressive symptoms appear to be related risk factors for worsening cognition but low cognitive function does not lead to worsening loneliness over time. Copyright © 2016 John Wiley & Sons, Ltd.

Working memory delay activity predicts individual differences in cognitive abilities.

A great deal of prior research has examined the relation between estimates of working memory and cognitive abilities. Yet, the neural mechanisms that account for these relations are still not very well understood. The current study explored whether individual differences in working memory delay activity would be a significant predictor of cognitive abilities. A large number of participants performed multiple measures of capacity, attention control, long-term memory, working memory span, and fluid intelligence, and latent variable analyses were used to examine the data. During two working memory change detection tasks, we acquired EEG data and examined the contralateral delay activity. The results demonstrated that the contralateral delay activity was significantly related to cognitive abilities, and importantly these relations were because of individual differences in both capacity and attention control. These results suggest that individual differences in working memory delay activity predict individual differences in a broad range of cognitive abilities, and this is because of both differences in the number of items that can be maintained and the ability to control access to working memory.

Unreflective actions? complex motor skill acquisition to enhance spatial cognition

Cognitive science has recently moved toward action-integrated paradigms to account for some of its most remarkable findings. This novel approach has opened up new venues for the sport sciences. In particular, a large body of literature has investigated the relationship between complex motor practice and cognition, which in the sports domain has mostly concerned the effect of imagery and other forms of mental practice on motor skill acquisition and emotional control. Yet recent evidence indicates that this relationship is bidirectional: motor experience also influences higher cognition, with a broad range of cognitive abilities being impacted in various ways. In this paper, I review the latest research exploring the effect of complex motor practice on spatial cognition. After emphasizing the versatility of processes that are recruited in the acquisition of complex motor skills, I present further experimental evidence to suggest that the process of acquiring new motor skills triggers specific adaptions in the brain, which in turn can be critical in numerous aspects of daily life. Finally, I propose a mechanistic explanation to account for motor-induced improvements, within an embodied framework of cognition.

Concurrent Validity of the WISC-IV and DAS-II in Children With Autism Spectrum Disorder

Cognitive assessments are used for a variety of research and clinical purposes in children with autism spectrum disorder (ASD). This study establishes concurrent validity of the Wechsler Intelligence Scales for Children–fourth edition (WISC-IV) and Differential Ability Scales–second edition (DAS-II) in a sample of children with ASD with a broad range of cognitive abilities. Participants achieved significantly higher overall scores on the DAS-II and nearly half the sample achieved a higher classification label on the DAS-II. The difference between overall scores is suggested to be attributable to a relative weakness in processing speed, which is assessed on the WISC-IV but not the DAS-II. Autistic symptomatology was not associated with cognitive scores, while adaptive behavior was positively associated. Neither was associated with the magnitude of difference between overall scores. Choice of assessment should be considered carefully given the systematic differences in overall scores produced in this population.

Shared deficits in space, time, and quantity processing in childhood genetic disorders

Shared deficits in space, time, and quantity processing in childhood genetic disorders

Covariation of learning and “reasoning” abilities in mice: Evolutionary conservation of the operations of intelligence.

Contemporary descriptions of human intelligence hold that this trait influences a broad range of cognitive abilities, including learning, attention, and reasoning. Like humans, individual genetically heterogeneous mice express a "general" cognitive trait that influences performance across a diverse array of learning and attentional tasks, and it has been suggested that this trait is qualitatively and structurally analogous to general intelligence in humans. However, the hallmark of human intelligence is the ability to use various forms of "reasoning" to support solutions to novel problems. Here, we find that genetically heterogeneous mice are capable of solving problems that are nominally indicative of inductive and deductive forms of reasoning, and that individuals' capacity for reasoning covaries with more general learning abilities. Mice were characterized for their general learning ability as determined by their aggregate performance (derived from principal component analysis) across a battery of five diverse learning tasks. These animals were then assessed on prototypic tests indicative of deductive reasoning (inferring the meaning of a novel item by exclusion, i.e., "fast mapping") and inductive reasoning (execution of an efficient search strategy in a binary decision tree). The animals exhibited systematic abilities on each of these nominal reasoning tasks that were predicted by their aggregate performance on the battery of learning tasks. These results suggest that the coregulation of reasoning and general learning performance in genetically heterogeneous mice form a core cognitive trait that is analogous to human intelligence.

Lower IQ is Associated with Decreased Clinical Response to Atomoxetine in Children and Adolescents with Attention-Deficit Hyperactivity Disorder

Atomoxetine is commonly used to treat attention-deficit hyperactivity disorder (ADHD) in children with a broad range of cognitive abilities. We examined the association between level of cognitive functioning as determined by IQ and clinical response during treatment with atomoxetine. The records of all the children and adolescents treated with atomoxetine at a university clinic in Catania, Italy, over a 3-year period were examined. A total of 55 clinically referred children and adolescents (aged 5-15 years, 53 males) with ADHD were treated with atomoxetine (10-110 mg/day; mean: 1.28 mg/kg/day) for a period ranging from 2 to 168 weeks (mean: 57.3 ± SD 39.4, median: 56). The IQ was assessed as part of the diagnostic evaluation prior to starting treatment. During treatment, clinical outcome was rated on the Clinical Global Impression-Improvement (CGI-I) and CGI-Severity (CGI-S) scales. The IQ ranged from 43 to 117 (mean: 80.6 ± SD 18.6, median: 84). The IQ and final CGI-I scores were negatively correlated (r = -0.68; p < 0.01). Children and adolescents with an IQ <85 were less likely to be responders (defined as a final CGI-I score of 1 or 2) than children and adolescents with an IQ ≥85 (20.71% vs 76.9%; p < 0.001). None of the patients discontinued atomoxetine due to adverse effects, while treatment was discontinued in 20 subjects due to a lack of efficacy or ambivalence of parents about pharmacological treatment. Atomoxetine appears to be less effective in children and adolescents with an IQ <85 than in children and adolescents in the average range of cognitive functioning. This difference is not accounted for by differences in the severity of ADHD symptoms, co-morbidity or reduced tolerability to the medication. These findings suggest that, in order to be fully informative, clinical trials of medications for ADHD should also include children and adolescents functioning in the borderline and cognitive disability range.

Cognitive Deficits Presenting as Psychiatric Symptoms in a Patient with Moyamoya Disease

The case of a middle-aged man who had intraventricular hemorrhages secondary to Moyamoya disease (MMD), and initially, presented with psychiatric symptoms which did not respond to treatment is described. Neuropsychological assessment showed underlying significant cognitive deficits, mostly of complex attention and speed of information processing, visuospatial and constructional abilities, verbal and nonverbal memory, and executive functions. These deficits remained stable or slightly improved in follow-up assessments. Cognitive dysfunction should be suspected in case of psychiatric or psychiatric-related symptoms in MMD patients. This case study in Greece highlights the range of preserved and impaired cognitive functions in adult MMD by means of repeated neuropsychological evaluations in which a broad range of cognitive abilities were assessed.

Neuropsychological Outcomes of Older Breast Cancer Survivors: Cognitive Features Ten or More Years After Chemotherapy

Neuropsychological Outcomes of Older Breast Cancer Survivors: Cognitive Features Ten or More Years After Chemotherapy