The Flynn effect in South Africa

This is a study of secular score gains in South Africa. The findings are based on representative samples from datasets utilized in norm studies of popular mainstream intelligence batteries such as the WAIS as well as widely used test batteries which were locally developed and normed in South Africa. Flynn effects were computed in three ways. First, studies where two different groups take the same test, with several years in between, using representative or comparable samples were used. Second, studies where the same group takes two different test batteries at a specific time were used. Third, the score differences between English- and Afrikaans-speaking Whites in South Africa in the 20th century were compared. The Flynn effect in White groups in South Africa is somewhat smaller than the Flynn effect in Western, industrialized countries (total N = 6534), and the Flynn effect in Indian groups is substantially smaller (total N = 682). Non-verbal IQ scores surpassed increases in verbal IQ scores. The findings from English- and Afrikaans-speaking Whites evidence a leveling out of differences in score gains over the 20th century (total N = 79,310). A meta-regression analysis showed no clear support for the moderators a) method used for computing the Flynn effect gain, b) type of test battery, c) time span, d) quality of the sample, and e) average age of sample.     

A preliminary investigation of sudden gains in exposure therapy for PTSD

The purpose of the current study was to examine sudden gains in those receiving treatment for PTSD and whether these rapid changes were related to overall symptom reduction in a small sample of female assault survivors with PTSD undergoing prolonged exposure (PE) therapy. Sudden gains were found to occur in 52% of the sample. Among those who experienced a sudden gain, the average magnitude (12.4 points) accounted for 61% of overall symptom reduction. Importantly, treatment outcome was better for those who experienced sudden gains than those who did not. The experience of a sudden gain may result in patients becoming more fully engaged with treatment, and recognition of them may result in identifying potential process-related predictors of treatment response.     

movies about intelligence: the limitations of g

There is a strong tendency for the same people to do better or worse on a wide variety of IQ tests. On this basis, some psychologists posit the concept of g , or a general intelligence factor. Does g show that performance on a wide range of cognitive tasks is influenced by individual differences in brain quality? It may, but if so, g lacks a sociological dimension and cannot explain cognitive trends over time or assess their significance. It also encourages a paradox about nature versus nurture and oversimplifies the causes of the Black-White IQ gap.     

关于自我改变的心理研究

本文总结和概括了关于自我改变研究的理论成果,分析了自我改变的努力容易失败的原因,揭示了人们对自我改变失败的认知取向,以及在很可能会再度失败的情况下启动自我改变的新一轮行动的心理机制。     

The differential processing of price in gains and losses: the effects of frame and need for cognition

Perhaps the most fundamental principle of decision theory is that more money is preferred to less: the principle of desired wealth. Based on this and other principles such as reference dependence and loss aversion, researchers have derived and demonstrated mental accounting (MA) rules for multiple outcome situations. Experiment 1 tested the invariance of the desired wealth principle and two mental accounting rules (mixed gain, e.g. $100 gain and a $50 loss; mixed loss, e.g. $100 loss and a $50 gain) across types of decision maker and frame. The desired wealth principle and the MA rule for mixed gains were found to vary depending upon (1) the thoughtfulness of the decision maker (need for cognition, NC), and (2) the frame used to describe gains and losses (e.g. a gain of $x versus a gain of y%). The MA rule for mixed losses, however, was found to be immune to framing effects, even among people who are generally less thoughtful. The differential processing of gains and losses across frames (dollar versus percentage) and individuals (less versus more thoughtful) was tested further in Experiment 2 where evaluations of mixed losses were made at the level of the gestalt as well as the constituent (the gain and the loss being evaluated separately). Framing effects were evidenced only among subjects lower in NC and only when the constituent gain was evaluated. Evaluations of the overall mixed loss and the constituent loss were comparable across situation and individual, suggesting that losses motivate greater processing among people otherwise inclined toward cognitive miserliness. Copyright © 2000 John Wiley & Sons, Ltd.     

Cooperative learning and group contingencies

This paper discusses the similarities and differences between cooperative learning and group contingencies. Cooperative learning refers to any methods in which students work together to help one another learn, while group contingencies refer to rewarding students based on the performance of a group. Research on the achievement effects of cooperative learning finds that these methods are effective primarily when they incorporate group contingencies, when groups are rewarded based on the average of their members' individual learning performances. The use of group contingencies within cooperative learning is hypothesized to motivate students to do a good job of explaining concepts and skills to their groupmates, and elaborated explanation is the principal behavior found to account for achievement gains in cooperative learning.     

IMPROVING SOCIAL INTERACTION IN A CHRONIC PSYCHOTIC USING DISCRIMINATED AVOIDANCE (“NAGGING”): EXPERIMENTAL ANALYSIS AND GENERALIZATION

Three social-interaction behaviors of a withdrawn, chronic schizophrenic were increased using a discriminated avoidance (“nagging”) procedure. The three behaviors were: (a) voice volume loud enough so that two-thirds of his speech was intelligible at a distance of 3 m; (b) duration of speech of at least 15 sec; (c) placement of hands and elbows on the armrests of the chair in which he was sitting. “Nagging” consisted of verbal prompts to improve performance when the behaviors did not meet their criteria. A combined withdrawal and multiple-baseline design was used to evaluate the effectiveness of the procedure, and the contingency was sequentially applied to each of the three behaviors in each of four different interactions to determine the degree of stimulus and response generalization. Results indicated that the contingency was the effective element in increasing the patient's appropriate performance, and that there was a high degree of stimulus generalization and a moderate degree of response generalization. After the patient's discharge from the hospital, the durability of improvement across time and setting was determined in followup sessions conducted at a day treatment center and at a residential care home. Volume and duration generalized well to the new settings, while arm placement extinguished immediately.     

Revisiting the Gain–Loss Separability Assumption in Prospect Theory

A fundamental assumption of prospect theory is gain–loss separability (GLS)—the assertion that the overall utility of a prospect can be expressed as a function of the utilities of its positive and negative components. Violations of GLS may potentially limit the generalization of results from studies of single‐domain prospects to mixed prospects and systematically distort the predictions of the theory. Violations also have implications for how choices with positive and negative components should be presented to decision makers. Previous studies, using different elicitation methods, have documented different rates, and types, of systematic violations of GLS. We discuss the differences between two specific elicitation methods—binary choice and certainty equivalents—and report results of a new study of GLS using both methods and randomly generated prospects. We compare the extent and nature of GLS violations under the two elicitation methods using between‐subject and within‐subject analyses. We find (i) systematic violations of GLS under both methods, (ii) higher rates of violations under choice, (iii) higher sensitivity to the outcomes for the certainty equivalents, which is consistent with the predictions of the scale‐compatibility hypothesis, and (iv) different patterns of violations under the two methods, which are explained by method‐specific preferences. We discuss the psychological mechanisms underlying the findings and the implications for presenting information with gain and loss components. Copyright © 2012 John Wiley & Sons, Ltd.     

Looking down and ramping up: The impact of status differences on effort in intergroup contexts

This paper examines how the status of an out-group impacts effort in intergroup settings. The results provide evidence that people work harder when their individual performance is compared to a lower, as opposed to higher, status out-group member. Moreover, comparisons to a lower status out-group were found to elicit motivation gains as these participants worked harder than participants in the control (Studies 1-3) or in-group comparison conditions (Studies 2 and 3). In Study 4, evidence for the role of threat as an underlying mechanism was provided as gains in effort for those compared with a lower status out-group member were eliminated when participants self- or group-affirmed prior to comparison. Finally, Study 5 shows that both social identity threat and self-categorization threat underlie increases in effort for participants compared to a lower status out-group member. We detail a theoretical basis for our claim that performance comparisons with lower status out-group members are especially threatening, and discuss the implications for this research in terms of social identity and self-categorization theories as they relate to effort in intergroup contexts.     

Self‐Control Moderates Decision‐Making Behavior When Minimizing Losses versus Maximizing Gains

We examined (1) whether people would be more responsive to the delayed consequences of their decisions when attempting to minimize losses than when attempting to maximize gains in a history‐dependent decision‐making task and (2) how trait self‐control would moderate such an effect. In two experiments, participants performed a dynamic decision‐making task where they chose one of two options on each trial. The increasing option always gave a smaller immediate reward but caused future rewards for both options to increase. The decreasing option always gave a larger immediate reward but caused future rewards for both options to decrease. In Experiment 1 where the two options had equivalent expected value in the long run, participants were more prone to select the increasing option, which yielded larger benefits on future trials, in the loss‐minimization condition than in the gain‐maximization condition. Trait self‐control moderated the effect of losses by enhancing the effect for low self‐control participants while attenuating it for high self‐control participants. In Experiment 2 where selecting the increasing option was suboptimal, low self‐control participants still attempted to reduce losses on future trials by selecting the increasing option more often than high self‐control participants. These results suggest that decision makers value delayed consequences of their actions more in a losses domain relative to a gains domain and low self‐control individuals are more susceptible to such an effect. Copyright © 2014 John Wiley & Sons, Ltd.