The impact of working memory training on near and far transfer measures: Is it all about fluid intelligence?

This randomized control study investigates the effects of working memory (WM) training on near (similar WM memory tasks) and far (math problem-solving processes and accuracy tasks) transfer in children aged 7 to 11 years who vary in fluid intelligence. Participants were randomly assigned to either a control group or one of two WM training conditions (repeated practice vs. cued recall). ?When compared to the control condition, the results show that the cued recall condition yields higher post-test scores for the far transfer measures, whereas the repeated practice condition yields higher scores for the near transfer? measures. However, these finding are qualified by significant treatment × fluid intelligence interactions. Thus, improvements in WM and related measures, as well as the positive transfer in learning outcomes, are moderated by fluid intelligence.     

How popular is the Personality Assessment Inventory in practice and training?

A review of recent survey data indicates that the Personality Assessment Inventory ranks among the most frequently used objective personality tests in practice and clinical training.     

Individual differences in speakers’ perspective taking: The roles of executive control and working memory

Both speaking and listening require taking into account the perspective of one’s communicative partner. Is perspective taking a domain-specific process internal to the language production and comprehension systems? Or is it a domain-general process regulated by the same mechanisms that are used to regulate other forms of behavior? Past research has shown that listeners’ perspective taking is at least partially regulated by inhibitory control and working memory (WM), suggesting that it may be best thought of in domain-general terms. The present experiment was designed to explore individual differences in nonlinguistic executive functioning in order to assess whether domain-general mechanisms help regulate speakers’ perspective-taking behavior. A group of 60 speakers participated in a referential communication task and in tasks measuring WM and executive control (EC). The results revealed that WM and EC were both predictive of the speakers’ perspective taking, suggesting that perspective taking may be regulated by domain-general mechanisms.     

Verbal self‐instructions in task switching: a compensatory tool for action‐control deficits in childhood and old age?

This study examined the influence of verbal self-instructions on age differences in task switching. Task-switching ability, measured as the difference between performance in single-task blocks and in mixed-task blocks in which participants switch between two tasks (mixing costs), increases during childhood and decreases in old age. To measure the influence of language on task switching, we compared conditions in which participants either (a) named the next task to be performed (i.e. task-relevant verbalization), (b) verbalized words not related to the task at hand (i.e. task-irrelevant verbalization), or (c) did not verbalize (control condition). Results indicated that mixing costs were substantially reduced under task-relevant verbalization and increased under task-irrelevant verbalization. Moreover, age-related differences in mixing costs were increased when the use of inner speech was disrupted and were reduced when participants performed task-relevant verbalization. These findings suggest that verbal self-instructions are a useful tool for retrieving the next task goal and for reducing action-control deficits in younger children and older adults.     

How does bilingualism improve executive control? A comparison of active and reactive inhibition mechanisms

It has been claimed that bilingualism enhances inhibitory control, but the available evidence is equivocal. The authors evaluated several possible versions of the inhibition hypothesis by comparing monolinguals and bilinguals with regard to stop signal performance, inhibition of return, and the attentional blink. These three phenomena, it can be argued, tap into different aspects of inhibition. Monolinguals and bilinguals did not differ in stop signal reaction time and thus were comparable in terms of active-inhibitory efficiency. However, bilinguals showed no facilitation from spatial cues, showed a strong inhibition of return effect, and exhibited a more pronounced attentional blink. These results suggest that bilinguals do not differ from monolinguals in terms of active inhibition but have acquired a better ability to maintain action goals and to use them to bias goal-related information. Under some circumstances, this ability may indirectly lead to more pronounced reactive inhibition of irrelevant information.     

How is Self‐Forgiveness Possible?

The idea of self‐forgiveness poses a serious challenge to any philosopher interested in giving a general account of forgiveness. On the one hand, it is an uncontroversial part of our common psychological and moral discourse. On the other, any account of self‐forgiveness is inconsistent with any general account of forgiveness which implies that only the victim of an offense can forgive. To avoid this conclusion, one must either challenge the particular claims that preclude self‐forgiveness or offer an independently plausible account of self‐forgiveness. I deploy both strategies in this article, explaining what self‐forgiveness is and how it is possible.     

Training self‐assessment and task‐selection skills to foster self‐regulated learning: Do trained skills transfer across domains?

Students' ability to accurately self‐assess their performance and select a suitable subsequent learning task in response is imperative for effective self‐regulated learning. Video modeling examples have proven effective for training self‐assessment and task‐selection skills, and—importantly—such training fostered self‐regulated learning outcomes. It is unclear, however, whether trained skills would transfer across domains. We investigated whether skills acquired from training with either a specific, algorithmic task‐selection rule or a more general heuristic task‐selection rule in biology would transfer to self‐regulated learning in math. A manipulation check performed after the training confirmed that both algorithmic and heuristic training improved task‐selection skills on the biology problems compared with the control condition. However, we found no evidence that students subsequently applied the acquired skills during self‐regulated learning in math. Future research should investigate how to support transfer of task‐selection skills across domains.     

How useful is the concept of the ‘harm threshold’ in reproductive ethics and law?

In his book Reasons and Persons, Derek Parfit suggests that people are not harmed by being conceived with a disease or disability if they could not have existed without suffering that particular condition. He nevertheless contends that entities can be harmed if the suffering they experience is sufficiently severe. By implication, there is a threshold which divides harmful from non-harmful conceptions. The assumption that such a threshold exists has come to play a part in UK policy making. I argue that Parfit’s distinction between harmful and non-harmful conceptions is untenable. Drawing on Kant’s refutation of the ontological argument for God’s existence, I suggest that the act of creation cannot be identical with the act of harming—nor indeed of benefiting—however great the offspring’s suffering may be. I suggest that Parfit is right that bringing children into existence does not usually harm them, but I argue that this must be applied to all conceptions, since Parfit cannot show how the harm threshold can be operationalised. If we think certain conceptions are unethical or should be illegal, this must be on other grounds than that the child is harmed by them. I show that a Millian approach in this context fails to exemplify the empirical and epistemological advantages which are commonly associated with it, and that harm-based legislation would need to be based on broader harm considerations than those relating to the child who is conceived.     

Who shalt not kill? Individual differences in working memory capacity, executive control, and moral judgment

Recent findings suggest that exerting executive control influences responses to moral dilemmas. In our study, subjects judged how morally appropriate it would be for them to kill one person to save others. They made these judgments in 24 dilemmas that systematically varied physical directness of killing, personal risk to the subject, inevitability of the death, and intentionality of the action. All four of these variables demonstrated main effects. Executive control was indexed by scores on working-memory-capacity (WMC) tasks. People with higher WMC found certain types of killing more appropriate than did those with lower WMC and were more consistent in their judgments. We also report interactions between manipulated variables that implicate complex emotion-cognition integration processes not captured by current dual-process views of moral judgment.     

Is the fluency of language outputs related to individual differences in intelligence and executive function?

There has been little research on the fluency of language production and individual difference variables, such as intelligence and executive function. In this study, we report data from 106 participants who completed a battery of standardized cognitive tasks and a sentence production task. For the sentence production task, participants were presented with two objects and a verb and their task was to formulate a sentence. Four types of disfluency were examined: filled pauses (e.g. uh, um), unfilled pauses, repetitions, and repairs. Repetitions occur when the speaker suspends articulation and then repeats the previous word/phrase, and repairs occur when the speaker suspends articulation and then starts over with a different word/phrase. Hierarchical structural equation modeling revealed a significant relationship between repair disfluencies and inhibition. Conclusions focus on the role of individual differences in cognitive ability and their role in models and theories of language production.     

Gender differences in social representations of aggression: The phenomenological experience of differences in inhibitory control?

Women are more likely than men to experience acts of aggression as expressive (a loss of self‐control) than as instrumental (control over others). We propose that this might arise from differences in behavioural restraint. If women have better inhibitory control, aggressive behaviour should occur less frequently yet should be experienced as more emotionally ‘out of control’ because women can tolerate higher levels of anger before inhibitory control is breached. Participants (N =606) aged 13–24 completed the Multidimensional Personality Questionnaire (MPQ), the State‐Trait Anger Expression Inventory‐2 (STAXI‐2) and Expagg. A more expressive view of aggression was associated with higher levels of STAXI anger control and higher levels of MPQ constraint. However, it was the harm avoidance component of constraint, rather than control versus impulsivity, that was the stronger predictor. While behavioural inhibition is built on an infrastructure of fear, the latter may be more important in explaining gender differences in social representations of aggression.     

How to control a white bear? Individual differences involved in self-perceived and actual thought-suppression ability

Thought suppression is generally considered a maladaptive mental control strategy, leading to increased intrusions. In the experimental psychopathology literature, thought suppression is assigned a central role in anxiety and depression, disorders characterised by a high level of negative intrusive thoughts. We examined predictors of self-perceived and actual thought suppression ability in an undergraduate sample. It was found that self-perceived suppression ability was predicted by anxiety and depression scores, attentional control, and distraction strategies. Immediate and rebound effects of actual suppression were predicted by depression scores. Interestingly, higher levels of attentional control and distraction were related to more successful thought suppression on the questionnaires, yet were related to increased intrusions during suppression.     

How is phonological processing related to individual differences in children’s arithmetic skills?

While there is evidence for an association between the development of reading and arithmetic, the precise locus of this relationship remains to be determined. Findings from cognitive neuroscience research that point to shared neural correlates for phonological processing and arithmetic as well as recent behavioral evidence led to the present hypothesis that there exists a highly specific association between phonological awareness and single‐digit arithmetic with relatively small problem sizes. The present study examined this association in 37 typically developing fourth and fifth grade children. Regression analyses revealed that phonological awareness was specifically and uniquely related to arithmetic problems with a small but not large problem size. Further analysis indicated that problems with a high probability of being solved by retrieval, but not those typically associated with procedural problem‐solving strategies, are correlated with phonological awareness. The specific association between phonological awareness and arithmetic problems with a small problem size and those for which a retrieval strategy is most common was maintained even after controlling for general reading ability and phonological short‐term memory. The present findings indicate that the quality of children’s long‐term phonological representations mediates individual differences in single‐digit arithmetic, suggesting that more distinct long‐term phonological representations are related to more efficient arithmetic fact retrieval.     

Age differences in the control of looking behavior: do you know where your eyes have been?

Previous research has shown that during visual search young and old adults' eye movements are equivalently influenced by the appearance of task-irrelevant abrupt onsets. The finding of age-equivalent oculomotor capture is quite surprising in light of the abundant research suggesting that older adults exhibit poorer inhibitory control than young adults on a variety of different tasks. In the present study, we examined the hypothesis that oculomotor capture is age invariant when subjects' awareness of the appearance of task-irrelevant onsets is low, but that older adults will have more difficulty than young adults in inhibiting reflexive eye movements to task-irrelevant onsets when awareness of these objects is high. Our results were consistent with the level-of-awareness hypothesis. Young and old adults showed equivalent patterns of oculomotor capture with equiluminant onsets, but older adults misdirected their eyes to bright onsets more often than young adults did.     

Are training and transfer effects of working memory updating training modulated by achievement motivation?

Previous studies examining effects of working memory (WM) updating training revealed mixed results. One factor that might modulate training gains, and possibly also transfer of those gains to non-trained cognitive tasks, is achievement motivation. In the present Studies 1 and 2, students with either a high (HAM) or low (LAM) achievement motivation completed a 14-day visuospatial WM updating training program. In Study 2, the students also performed a set of tasks measuring other executive functions and fluid intelligence prior to and after training. In both studies, the HAM students displayed a larger training gain than the LAM students. Study 2 revealed that after training, both groups showed better performance on the near-transfer but not far-transfer tasks. Importantly, the differential training gain was not associated with better post-training performance for the HAM compared to the LAM students on any of the transfer tasks. These results are taken to support a modulatory role of achievement motivation on WM training benefits, but not on transfer of those benefits to other tasks. Possible reasons for the general improvement on the near-transfer tasks and the absence of a modulatory role of achievement motivation on transfer-task performance are discussed.     

How malleable is comparative self‐positivity? The effects of manipulating judgemental focus and accessibility

The present research investigated accessibility effects on comparative self‐positivity in the environmental domain. In a pretest we established comparative self‐positivity and a focus effect for environmental awareness. In the main study we aimed at shifting these effects by manipulating the accessibility of harmful behaviours of either the self or the typical student before obtaining comparative judgements. Specifically, we used two types of accessibility manipulations: anchoring and ease of retrieval. We predicted that judgements would be affected by content in the anchoring paradigm but by subjective ease in the ease of retrieval paradigm. We found the predicted pattern of effects, but it was strongest when participants focused on the typical student. The findings contribute to our understanding of the mechanisms underlying comparative biases and may have applied implications. Copyright © 2006 John Wiley & Sons, Ltd.     

Age-related differences in switching between cognitive tasks: does internal control ability decline with age?

The present study tested the hypothesis that older adults establish a weaker task set than younger adults and therefore rely more on stimulus-triggered activation of task sets. This hypothesis predicts that older adults should have difficulty with task switches, especially when the stimuli-responses are associated with multiple, competing tasks. Weak task preparation, however, could actually benefit older adults when performing an unexpected task. The authors tested this prediction in Experiment 1 using a repeating AABB task sequence, with univalent and bivalent stimuli intermixed. On some univalent trials, participants received an unexpected task. Contrary to the authors' predictions, expectancy costs were not smaller for older adults. Similar findings were obtained in Experiments 2 and 3, in which the authors used a task-cueing paradigm to more strongly promote deliberate task preparation. The authors found no disproportionate age effects on switch costs but did find age effects on bivalence costs and mixing costs. The authors conclude that older adults do experience extra difficulty dealing with stimuli associated with 2 active tasks but found no evidence that the problem specifically stems from an increased reliance on bottom-up task activation rather than top-down task preparation.     

How fatiguing is dispositional suppression? Disentangling the effects of procedural rebound and ego‐depletion

Recent work has shown that correcting a dispositional inference may lead social observers to over‐emphasize the role of dispositional factors in subsequent judgments. This effect has been explained as a procedural rebound following a phase of dispositional suppression. We conducted two experiments to test an alternative explanation in terms of ego‐depletion. In Experiment 1, we compared the effects of ego‐depletion and dispositional rebound by relying on the attitude attribution paradigm and the cookie paradigm. In Experiment 2, we turned to a difficult math task in order to induce fatigue. We were able to replicate the dispositional rebound and the ego‐depletion effects but none of the experiments supported an ego‐depletion explanation of post‐suppression dispositional rebound. Copyright © 2006 John Wiley & Sons, Ltd.