Effects of Time Frame on Creative Thought: Process Versus Problem-Solving Effects

Time and people's perceptions of it have commonly been held to influence creative thought. One critical concern is the effect of temporal orientation, a focus on the past, present, or future, on creative thought. To address this issue, 197 undergraduates were asked to produce a solution to an educational creative problem-solving task. Solutions to this problem were scored for quality, originality, and elegance; preparatory activities were scored for effective execution of requisite creative problem-solving processes. Temporal orientation, time pressure, and framing were manipulated. It was found that temporal orientation, time pressure, and framing did not exert strong effects on solution quality, originality, and elegance. However, temporal orientation, time pressure, and framing exerted stronger, albeit different, effects on the effectiveness of process execution with time pressure contributing to effective execution of some processes, but not others. The implications of these findings for understanding the ways in which time influences creative thought are discussed.     

Leaving patches: Effects of travel requirements

Five pigeons were trained in an analogue foraging procedure in which, by completing a travel requirement, they entered a “patch” in which a reinforcer might be available after an unpredictable time. They also had the opportunity, by emitting a defined response, to exit the patch and travel to another patch. Prey availability in a patch was not signaled. Data were collected on the length of time that subjects stayed in patches before exiting (residence times) as a function of various travel requirements: travel for a fixed time in blackout, fixed-interval schedule traveling, fixed-time traveling with an added response required to terminate traveling, and fixed-ratio traveling. For each of these conditions, the required amount of travel (time or responses) was varied over a wide range. As previously reported, residence times increased with increases in fixed-time traveling, as they did with increasing fixed-interval or fixed-ratio traveling. There was no evidence that adding response or work requirements systematically affected residence time except via increased travel time, although 3 of the 5 birds stayed longer in a patch under higher fixed-ratio values. A “threshold-maximization” model described the data well with a single parameter that was consistent across subjects, procedures, and experiments.     

Guided Search: The Effects of Learning

The previous report (Efron & Yund, 1996) offered an interpretation of the results of a number of search experiments within the theoretical context of the guided search model of Cave and Wolfe (1990) and Wolfe (1994). The present report extends this interpretation to the effects of extended practice when subjects search for a target defined by its orientation in the presence of a number of heterogeneous distractor items having differing orientations. Three experiments are described: The first revealed that over the course of 21 experimental sessions extending for a period of 6 weeks there were marked decreases in the magnitude of the reaction time gradient (RTG) and the right visual field superiority observed in the previous experiments. This learning persisted for more than 3 years. The second experiment revealed an interference in the capacity to learn to detect a target of one orientation when subjects had previously learned to detect a target of a different orientation at the same locations. The third experiment revealed that the learning was restricted to the area of the visual field where the target had been presented and that subjects could learn to detect two different targets concurrently. The results of these experiments indicate that the learning is orientation-specific and location-specific and is consistent with a localized increase in the selectivity of the top-down selection mechanism of the guided search model.     

Vibrotactile masking: Effects of multiple maskers

Threshold elevations (TE) were determined at a testsite on the left thigh with the simultaneous presentation of combinations of maskers positioned on the trunk. It was found that the resultant TE from groups of up to 10 multiple maskers is nearly equal to the addition of the TE produced by each masker separately.     

Effects of counsellor training: Further findings

The 1972/73 class of the University of Aston's Diploma in Counselling course were measured one year after training on their ability to respond empathically and on their ability to discriminate the quality of other counsellors' responses. The same group was also administered the Counsellor Attitude Scale six months and one year after their training. Differences from the administration at the end of the course were not significant on any measures, indicating that skills and attitudes persisted after training. Additionally, during the 1973/74 academic year, the Counsellor Attitude Scale was administered both at five different stages on the Aston course and also to other counsellor training courses. Results of the various CAS administrations are reported, and reasons are suggested for the different outcomes which seem – inter alia – to indicate the value of starting long courses with an intensive client-centred workshop.     

Quantifying aggression: Effects of identity of stimulus

A test for children's insight into relations between behaviour and aggressive emotion showed that kindergarten children showed an increase in ratings of emotion corresponding to an increase in aggressive behaviour (positive relation), and that an increase in ratings of emotions corresponding to a decrease in aggression-related behaviour (negative relation) was shown by seven- and nine-year-old children. Cognition of relations between aggressive emotion and behaviour seemed to be developed earlier than cognition of relations between intention and behaviour as observed in a previous study. Results from the test also indicated that the magnitude of emotion ratings differed in identity (same stimulus person) and non-identity (differed stimulus persons) stimulus conditions.     

Lightness of grays: Effects of Background reflectance

The influence of background reflectance was determined for lightness judgments relative to white of small gray patches. The effect of prior stimulus-context was avoided by considering only first judgments. It was found that lightness was proportional to the square root of reflectance when the background was a gray darker than the stimulus, but not when the background was lighter gray or white. In general, a small difference in reflectance between the stimulus and and background produced the same effect as a larger difference.     

Overcoming Misinformation Effects in Eyewitness Memory: Effects of Encoding Time and Event Cues

Eyewitness memory is often distorted when misleading information is presented to subjects after encoding. Three experiments explored ways to overcome these misinformation effects. In Experiment 1, subjects viewed slides of a robbery, at a rate of four or seven seconds per slide. Five minutes later subjects were given a recognition test with few (1–3) or numerous (6–13) event cues. Providing numerous retrieval cues improved overall performance, but did not reduce the effects of misinformation. W ith week-long delays (Experiment 2) numerous retrieval cues did eliminate misinformation effects, but only when subjects viewed slides at the slower rate (seven seconds per slide). Experiment 3 essentially replicated this pattern, using a modified test to eliminate any biasing effects of distractors. Given adequate encoding and numerous retrieval cues, misinformation effects were eliminated, suggesting that under some conditions misinformation makes event memory inaccessible, but not unavailable.     

Unemployment and Health: Selection Effects

A large number of studies have shown that the unemployed are less healthy, both physically and psychologically, than the employed. The explanation may be that unemployment has negative health effects. An alternative, or additional, explanation is that healthy persons are less likely to become unemployed or more likely to find new employment if they become unemployed. Such effects of health on employment status are generally referred to as selection effects. The present paper analyses to what extent such selection effects are present in the Norwegian labour market. Panel data with observations made in 1989 and 1993 are used. The analyses show that people with psychological problems are more likely to be laid off, and there is also some evidence that psychological or physical health problems may reduce the chances of finding a new job if one has become unemployed. It is of particular interest that these selection effects can be documented for a country like Norway, which has strong legislation supporting worker rights and a quite high degree of unionization.     

Recall as communication: Effects of frame anticipation

Summary Frame theories propose that memorization and retrieval reports are guided by frames, that is, abstract representations of a scene or an episode. They also propose that in unexpected recall, the subjects assume that the person who interprets the recall message uses a similar frame. Consequently, the recalling subject deletes from the recall report information from the frame that is highly predictable. This prediction was tested in an incidental memory task. After waiting 30 s in an office, the subjects were unexpectedly asked to recall everything in the office. They were either given standard instructions or instructions to recall so much that it would be comprehensible to a Martian. Thereafter, a recognition test was administered. In neither recall nor recognition were overall differences between the two recall conditions observed. The recognition data of both recall groups and a recognition-only group replicated previous findings, and were in agreement with the frame theories. The recall data revealed a significant interaction of recall instruction, object presence, and frame expectation. This is consistent with the proposition about frame anticipation. Recall of objects expected within the frame was higher under the Martian condition than under standard conditions, whereas recall of unexpected objects was higher under normal recall conditions. Both the recognition and the recall data are considered as evidence in favor of frame theory.     

Clinical Judgment: The Effects of Statistical Information

Four different judges at 3 levels of clinical experience were asked to make postdictive judgments on the length of stay in psychotherapy for mental health service clients. Judgments were made under 4 conditions in which psychodiagnostic and statistical information increased incrementally at each level. Accuracy increased with more information. Accuracy by experience level was not significant. A significant group by information level interaction demonstrated a lower proportion of correct judgments for the less experienced Js under reduced levels of information. Appropriateness of judgments was also lower for the less experienced Js. Statistical information was concluded to be valuable in clinical judgment.     

Effects of alternative reinforcement sources: A reevaluation

The effects of two alternative sources of food delivery on the key-peck responding of pigeons were examined. Pecking was maintained by a variable-interval 3-min schedule. In the presence of this schedule in different conditions, either a variable-time 3-min schedule delivering food independently of responding or an equivalent schedule that required a minimum 2-s pause between a key peck and food delivery (a differential-reinforcement-of-other-behavior schedule) was added. The differential-reinforcement-of-other-behavior schedule reduced response rates more than did the variable-time schedule in most instances. The delay between a key peck and the next reinforcer consistently was longer under the differential-reinforcement-of-other-behavior schedule than under the variable-time schedule. Response rates and median delay between responses and reinforcers were negatively correlated. These results contradict earlier conclusions about the behavioral effects of alternative reinforcement. They suggest that an interpretation in terms of response–reinforcer contiguity is consistent with the data.     

Updating misconceptions: Effects of age and confidence

Young adults are more likely to correct an initial higher confidence error than a lower confidence error (Butterfield & Metcalfe, 2001). This hypercorrection effect has never been investigated among older adults, although features of the standard paradigm (free recall, metacognitive judgments) and prior evidence of age-related error resolution deficits (see Clare & Jones, 2008) suggest that they may not show this effect. In Study 1, we used free recall and a 7-point confidence scale; in Study 2, we used multiple-choice questions, and participants indicated how many alternatives they had narrowed their options down to prior to answering. In both studies, younger and older adults showed a hypercorrection effect, and this effect was equivalent between groups in Study 2 when free recall and explicit confidence ratings were not required. These results are consistent with our previous work (Cyr & Anderson, 2012) showing that older adults can successfully resolve learning errors when the learning context provides sufficient support.     

即刻学习判断的系列位置效应：内外部线索的影响

为了检验即刻学习判断对内外部线索的敏感性,实验一被试为22名高中生,材料为三列含15个词语的清单,先逐个呈现词语系列位置信息,被试在学习前进行即刻学习判断,结果发现学习判断有显著首因效应,表明学习判断对系列位置信息这一外部线索比较敏感。实验二被试为20名高中生,先逐个呈现词语系列位置信息,被试在学习后进行即刻学习判断,结果发现学习判断同样有显著首因效应,表明学习判断对内部线索的敏感性并未强于外部线索。     

Effects of exercise on anxiety: A review

Abstract

The focus of this review is physical exercise and its possible effectiveness as a means of reducing anxiety. This review is based on English language literature and covers the time period from 1958 to 1988. It provides an overview of the results of research studies carried out in the area of physical fitness and psychological health, more specifically anxiety. In doing so, it draws attention to methodological limitations associated with a number of these research studies. In addition, it describes the level of exercise considered necessary to achieve improved cardio-respiratory fitness (training effect). Conclusions are made which suggest mild support for the positive effect of exercise with some individuals for reducing anxiety. Some speculative explanations as to why exercise may be effective in reducing levels of state anxiety are discussed.     

Residual Effects of Slavery: A Delphi Study

Slavery and its aftermath have created multiple challenges that are unique to the African American community. Although literature exists within other disciplines, no published empirical study within the marriage and family therapy literature has examined the residual effects of slavery. We used a modified Delphi methodology to explore the residual effects of slavery on African Americans and to determine resultant clinical implications. To obtain information from panelists who have expertise in this area, we conducted three rounds of data collection: an open-ended questionnaire, a Likert-scale questionnaire, and a round of in-depth interviews. Based on our analysis of the data collected, this empirical study describes the influence of the residual effects of slavery, implications for clinicians and directions for future research.

     

Instructive feedback: Effects of number and type

We evaluated the effects of presenting two instructive feedback stimuli of the same and different types for each target behavior taught. Four elementary school students with mild mental retardation were taught to name photographs of places of interest in the local community using constant time delay and instructive feedback. Initially, the four students were taught one set of photographs with one instructive feedback stimulus (name of the street on which the place was located) for each target photograph. All students learned to name all photographs, and three learned to name the street on which the place was located. The three students who learned to name the street for the place in the photograph were then taught three sets of photographs. Each set included two instructive feedback stimuli for each target photograph: Set 2 had one street name and one activity that occurred in the place; Set 3 had two activities per photograph, and Set 4 had one street name and one activity. The three students learned to name the photographs, but only learned to name the activities and not the street names that were presented through instructive feedback. These finds are discussed in terms of the factors that may control acquisition of instructive feedback stimuli and the implications for practice and future research.     

Vibrotactile masking: Effects of oneand two-site stimulation

Masked vibrotactile thresholds at the index fingertip were measured as a function of masker intensities, which were applied to the thenar eminence of the same hand. Test and masker frequencies were selected so that the Pacinian and non-Pacinian receptor systems were selectively activated. Remote-site masking was effective only when both masker and test stimulus were within the frequency range of the Pacinian system. Cross-channel masking did not occur.     

External human-machine interfaces: Effects of message perspective

Future automated vehicles may be equipped with external Human-Machine Interfaces (eHMIs). Currently, little is known about the effect of the perspective of the eHMI message on crossing decisions of pedestrians. We performed an experiment to examine the effects of images depicting eHMI messages of different perspectives (egocentric from the pedestrian’s point of view: WALK, DON’T WALK, allocentric: BRAKING, DRIVING, and ambiguous: GO, STOP) on participants’ (N = 103) crossing decisions, response times, and eye movements. Considering that crossing the road can be cognitively demanding, we added a memory task in two-thirds of the trials. The results showed that egocentric messages yielded higher subjective clarity ratings than the other messages as well as higher objective clarity scores (i.e., more uniform crossing decisions) and faster response times than the allocentric BRAKING and the ambiguous STOP. When participants were subjected to the memory task, pupil diameter increased, and crossing decisions were reached faster as compared to trials without memory task. Regarding the ambiguous messages, most participants crossed for the GO message and did not cross for the STOP message, which points towards an egocentric perspective taken by the participant. More lengthy text messages (e.g., DON’T WALK) yielded a higher number of saccades but did not cause slower response times. We conclude that pedestrians find egocentric eHMI messages clearer than allocentric ones, and take an egocentric perspective if the message is ambiguous. Our results may have important implications, as the consensus among eHMI researchers appears to be that egocentric text-based eHMIs should not be used in traffic.