Impaired performance from brief social isolation of rhesus monkeys (Macaca mulatta): a multiple video-task assessment

Social isolation has been demonstrated to produce profound and lasting psychological effects in young primates. In the present investigation, two adult rhesus monkeys (Macaca mulatta) were isolated from one another for up to 6 days and tested on 7 video tasks designed to assess psychomotor and cognitive functioning. Both the number and the quality (i.e., speed and accuracy) of responses were significantly compromised in the social isolation condition relative to levels in which the animals were tested together. It is argued that adult rhesus are susceptible to performance disruption by even relatively brief social isolation, and that these effects can best be assessed by a battery of complex and sensitive measures.     

Ordinal judgments of numerical symbols by macaques (Macaca mulatta)

Two rhesus monkeys (Macaca mulatta) learned that the arabic numerals 0 through 9 represented corresponding quantities of food pellets. By manipulating a joystick, the monkeys were able to make a selection of paired numerals presented on a computer screen. Although the monkeys received a corresponding number of pellets even if the lesser of the two numerals was selected, they learned generally to choose the numeral of greatest value even when pellet delivery was made arrhythmic. In subsequent tests, they chose the numerals of greater value when presented in novel combinations or in random arrays of up to five numerals. Thus, the monkeys made ordinal judgments of numerical symbols in accordance with their absolute or relative values.     

Endogenizing Epistemic Actions

Studia Logica - Through a series of examples, we illustrate some important drawbacks that the action model logic framework suffers from in its ability to represent the dynamics of information...     

Does the Long‐Contested Question of Orthodox Ecumenism Remain Open after Crete?

The article explores whether the Orthodox Council of Crete (2016) resolved longstanding tensions within Orthodoxy over ecumenism. The article first attempts to pinpoint the substance of the disagreement. The anti‐ecumenist position, the article claims, rests on a dogmatic belief that a communion formally separated from the Orthodox Church can only continue to lose grace and the ecclesial gifts of the Spirit, while ecumenists hold that another communion might recover or increase in such gifts even prior to formal reunification with Orthodoxy. The article then explores the much‐disputed use of the word ‘church’ for other Christian communions in the document ‘Relations of the Orthodox Church with the Rest of the Christian World’. If it is true, as many on both sides of the controversy have suggested, that the Council formally affirmed the pro‐ecumenist position, does this make anti‐ecumenism a no longer viable Orthodox stance? This depends on the Council’s status, a further contested matter on which the article concludes with some tentative reflections.     

Post-event misinformation effects in a language-trained chimpanzee (Pan troglodytes)

Animal Cognition - Errors of source monitoring are widespread human memory challenges, and our memories are subject to distortion upon the presentation of subsequent misinformation. Less is known...     

Dyskinesias differentiate autistic disorder from catatonia

Autistic disorder and catatonia are neuropsychiatric syndromes defined by impairments in social interaction, communication, and restricted, stereotypical motor routines. Assessments of children with these disorders are typically restricted in scope by the patients' limited ability to comprehend directions. The authors performed systematic assessments of dyskinesias on six prepubertal boys with autistic disorder and mental retardation and on one adolescent male with catatonia to determine if this type of information could be routinely obtained. The boys with autistic disorder had more stereotypies and tics, a greater degree of akathisia and hyperactivity, and more compulsions than the adolescent with catatonia. Catatonia was associated with catalepsy and dystonic postures. The authors conclude that the diagnostic accuracy and specificity of neuropsychiatric syndromes may be enhanced by the systematic assessment of the dyskinesias associated with each condition.     

Evaluation of behavioral measures of risk taking propensity with inner city adolescents

The current study examined the utility of behavioral measures of risk-taking propensity in the assessment of self-reported real-world risk-taking behaviors using a sample of 51 high-school-aged inner-city adolescents. Results indicated that performance on one behavioral measure, the balloon analogue risk task, accounted for unique variance in self-reported delinquency/safety risk behaviors as well as substance use risk behaviors, above and beyond that provided with demographics and self-report measures of risk-related constructs (i.e., impulsivity and sensation seeking). These results are discussed in relation to the potential utility of using a multimethod assessment approach for better understanding risk-taking vulnerability among adolescents.     

Impact of Sluggish Cognitive Tempo and Attention-Deficit/Hyperactivity Disorder Symptoms on Adults’ Quality of Life

The symptoms of Attention-Deficit/Hyperactivity Disorder (ADHD) have been linked to dysfunction in numerous life domains for both children and adults. As such, it is likely that individuals with these and other related symptoms (e.g., sluggish cognitive tempo, SCT) may also experience impaired quality of life. The current study examines the association between ADHD and SCT symptoms and quality of life (QOL) in a community sample of adults. Quality of life data collected from 983 participants (M age = 45.6 years) were analyzed primarily through a series of hierarchical multiple regressions employing SCT and ADHD symptom clusters, demographic, and anxiety and depression scale variables as predictors. Results generally supported the hypothesis that ADHD and SCT symptoms would negatively associate with QOL. Amongst the indicators, inattention and SCT emerged as the strongest predictors of low QOL. These findings underscore the negative impact of ADHD symptoms in adulthood, the independent contribution of SCT, and the importance of considering QOL in prospective research and intervention.     

Recognition and recall performance both benefit from the production effect with content-specific information

Two experiments assessed how reading aloud versus reading silently would benefit recognition and recall performance of content-specific vocabulary (i.e., the production effect). Participants studied 30 terms from an American history curriculum by reading half of the vocabulary aloud, while the remaining words were read silently. After a brief distractor task, they completed a recognition memory test (Experiment 1) or a recall memory test (Experiment 2). Both experiments revealed a benefit for reading aloud. Recognition performance showed a 22% performance advantage, while recall performance showed a smaller advantage for the words read aloud (8% benefit). The vast majority of participants in both experiments showed a memory advantage for those words that were studied aloud versus those read silently (88% of participants in Experiment 1 and 67% of individuals in Experiment 2). Implications for educational settings are considered.

Attempts to improve student performance have been manifested in various forms; however, recent developments in cognitive psychology have a great deal to offer educators and students regarding instruction and learning. Studies suggest that educators and cognitive psychologists ought to approach educational research as an interdisciplinary endeavor. Through this collaborative relationship, those who teach could improve their understanding of the science of learning, while researchers extend theoretical research to practical, classroom applications for the benefit of students and teachers.