In the standard 2–4–6 induction task, subjects are instructed to discover the rule generating sequences of three numbers by inventing number triples for which they receive immediate feedback. The rule is “ascending numbers”. Performance is greatly aided with Dual Goal (DG) instructions that ask subjects to discover two rules, one that generates “Dax” triples (equivalent to “yes” instances with Single Goal [SG] instructions) and another that generates “Med” triples (equivalent to “no” instances). The present study eliminates two explanations for this effect suggested by Wharton, Cheng, and Wickens (1993). Experiment 1 tested their Information-Quantity hypothesis that the effect results simply from the DG subjects testing more triples prior to proposing a rule. Our DG subjects were more likely to solve the problem and produced more “negative” triples than SG subjects when both groups generated exactly 15 triples. Two further groups received feedback only after generating all 15 triples, and again DG subjects were more likely to solve the problem and to generate more “negative” triples. Experiment 2 tested Wharton et al.'s Goal-Complementarity hypothesis that success under DG instructions hinges on preserving the complementary representation of the two rules. We compared SG instructions with three types of DG instructions that suggested different types of triples (Dax, Med, both Dax and Med, neither Dax nor Med). DG instructions were more effective in promoting successful rule discovery regardless of differences in rule complementarity. Our analysis of the heterogeneity of the examplars generated with DG instructions in both experiments suggest that success on the 2–4–6 task is as much a consequence of the breadth of hypotheses that subjects entertain as it is a consequence of the testing strategy.

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A range of automated video analytics systems (VAS) is increasingly being used to improve efficiency and effectiveness within CCTV control rooms. Their role is to manage the large volumes of surveillance data that are constantly generated and to sift the data in real time to detect incidents or activities of specific interest.The CCTV Operator Performance Benchmarking project investigated, through commissioning operator trials, the performance of human operators on detection and tracking tasks and the factors that affect the performance of human operators. Human performance can then be compared against that obtained from automated systems.Through the development of publicly available guidance documents, CAST hopes to improve the benefits brought by VAS to the control room environment, and to ensure they are deployed in an appropriate manner. The paper will discuss the trials and explore the results obtained. It will discuss the factors that can have both a positive and detrimental effect on operators' performance and the appropriate environments where the introduction of VAS can bring great benefits. (Abstract)

The expertise of native peoples as well as resources drawn from humanities, education, and arts organizations in Arizona contributed to an educational program to heighten the cultural sensitivity of health care professionals at the Children's Health Center of St. Joseph's Hospital. The sentiment expressed by Kraut that "respect for the cultural preferences and taboos of more traditional medical systems thus renders American physicians more effective and in the long run more efficient" is supported by our experience with this program.

The link between disturbed sleep and the extended lockdown period resulting from COVID-19 is well established. Data from an online survey of 2341 of university students (n = 1972, 84.2%) and staff were reported. Overall (n = 1710, 73.1%) were female and the mean age for the sample was 29.26 (SD = 12.86). 1799 (76.8%) provided self-reported data from the Nottingham Health Profile (NHP) Sleep Subscale that allowed sleep to be compared prior to the lockdown period and during the lockdown period. Sociodemographic data which included, gender, age, whether an individual was a student or member of the university staff, ethnicity, caring responsibilities, and highest educational level were collected. Other data included, the NHP Sleep Sub-scale, change in alcohol consumption during the lockdown period, routine behaviours during the lockdown period, self-efficacy and health and wellbeing. There was a significant deterioration in NHP Sleep scores (p < 0.001) and all areas of sleep that were assessed significantly deteriorated during the lockdown period. These included indicators of sleep quality, sleep latency, sleep duration, sleep disturbance and increased use of sleep medication. Following a multinomial logit regression with change of NHP sleep scores entered as the dependent variable there were several significant predictors. Women had greater sleep dysfunction than men. Increased alcohol consumption, lower educational status and a deterioration in health and well-being scores were associated with greater sleep dysfunction. Not having a designated area to work in and not putting on clothes and make-up were both associated with greater sleep dysfunction during the lockdown period. These findings confirm the importance of taking steps to maintain sleep hygiene during extended lockdown periods.