Magnitude estimates for electrical pulses: evidence for two neural mechanisms

The hypothesis that there are two neural mechanisms for electrocutaneous stimulation--one that is sensitive to low current and is adaptive to repeated stimulation and another that is responsive to high current and is less adaptive--was tested in a control and four main experiments. In the main experiments, magnitude estimates obtained for single electrical pulses (of 2-msec duration) were described by a simple power function for each combination of high- and low-current levels and 10 trial blocks. The results were: (1) The slope of the power function for low current was steeper than was that for high current; (2) for low current, the intercept of the power function decreased with increasing block, whereas for high current, it remained constant over blocks; (3) this decrease of the intercept for low current disappeared when judgmental blocks were separated by a rest period of 8 min; (4) the modulus did not affect the slope; (5) for a large modulus combined with low current, the intercept decreased rapidly over trial blocks, whereas for a small modulus combined with high current, the intercept increased over trial blocks. The first four findings support the two-mechanism hypothesis, but the last one may also be interpretable in terms of the regression to absolute scale values.     

Body Type Preferences in Asian and Caucasian College Students

While there is an extensive literature on gender differences in body image, little has focused on ethnic group differences in men's body image. College students ( N = 466) from a prestigious New England university indicated their current and ideal figures. Compared to Caucasians (N = 289), Asians (N = 92) reported smaller current figures. Both Caucasian and Asian women rated their current figure as larger than their ideal. Caucasian males reported no discrepancy between their current and ideal figures. However, Asian males rated their current figures as smaller than ideal. The effect of ethnicity on body satisfaction depended upon gender. For women, the ideal was thinner than current figure regardless of actual size, producing a discrepancy between current and ideal figures for both Caucasian and Asian women. Conversely, Asian and Caucasian men identified a similar ideal, producing a discrepancy between current and ideal figures only for Asian men.     

How to know and choose online games: differences between current and potential players.

This study investigated how different adolescent players acquire game information and the criteria they use in choosing online games and found that (1) current players generally use comprehensive information sources more than potential players do; (2) current players rely on free trials and smooth display of motion graphics as choice criteria more than potential players do; (3) potential players rely on the look of advertisements more than current players do; (4) both current and potential players most likely use word-of-mouth and gaming programs on TV as information sources; and (5) endorser attractiveness is ranked the least important among six choice criteria by both current and potential players.     

The Sins of Their Fathers: When Current Generations Are Held to Account for the Transgressions of Previous Generations

When are current generations held accountable for transgressions committed by previous generations? In two studies, we test the prediction that current generations will only be assigned guilt for past atrocities when victim group members perceive high levels of cultural continuity between historical perpetrators and the current generation within the perpetrator group. Japanese participants were presented with information describing the current generation of Americans as either similar or dissimilar in personality to the Americans who were implicated in dropping the atomic bomb on Japan during World War II. The results of both studies revealed that victim group members assigned more guilt to current Americans when they perceived high (compared to low) outgroup continuity, and they did so relatively independently of the transgressor group's guilt expressions.     

Use of current explanations in multicausal abductive reasoning

In multicausal abductive tasks a person must explain some findings by assembling a composite hypothesis that consists of one or more elementary hypotheses. If there are n elementary hypotheses, there can be up to 2ⁿ composite hypotheses. To constrain the search for hypotheses to explain a new observation, people sometimes use their current explanation—the previous evidence and their present composite hypothesis of that evidence; however, it is unclear when and how the current explanation is used. In addition, although a person's current explanation can narrow the search for a hypothesis, it can also blind the problem solver to alternative, possibly better, explanations. This paper describes a model of multicausal abductive reasoning that makes two predictions regarding the use of the current explanation. The first prediction is that the current explanation is not used to explain new evidence if there is a simple (i.e., nondisjunctive, concrete) hypothesis to account for that evidence. The second prediction is that the current explanation is used when attempting to discriminate among several alternative hypotheses for new evidence. These hypotheses were tested in three experiments. The results are consistent with the second prediction: the current explanation is used when discriminating among alternative hypotheses. However, the first prediction—that the current explanation is not used when a simple hypothesis can account for new data—received only limited support. Participants used the current explanation to constrain their interpretation of new data in 46.5% of all trials. This suggests that context-independent strategies compete with context-dependent ones—an interpretation that is consistent with recent work on strategy selection during problem solving.     

Comment on "Competition for consciousness among visual events: the psychophysics of reentrant visual processes" (Di Lollo,Enns, & Rensink, 2000)

V. Di Lolo, J. T. Enns, and R. A. Rensink (2000) reported properties of masking that they claimed were inconsistent with all current models. The current authors show, through computer simulation, that many current models can account for V. Di Lollo et al.'s (2000) data. Although V. Di Lollo et al. (2000) argued that their data could be accounted for only with models that incorporate reentrant processing, the current authors show that reentrant processing is not necessary.     

Saving graces: Impact of partner support and maternal attachment on partner attachments in an individualistic and a collectivist context

The current study investigated the relationships between current attachment to mother and attachment to romantic partners, and the role of current partner support and culture as moderators of that relationship. University students who were currently in a romantic relationship were recruited from Hong Kong and USA, and completed measures on attachment styles and partner support. Results showed that maternal attachment anxiety was correlated with romantic attachment anxiety; maternal attachment avoidance was correlated with romantic attachment avoidance, but this linkage varied by level of current partner support. Romantic attachment avoidance was also associated with current partner support, but this linkage was stronger for HK Chinese than for Americans. These results are discussed in terms of how interpersonal and personality factors promoted by culture can affect the developmental course of romantic relationships.     

经颅电刺激与视功能调控

经颅电刺激(Transcranial Electrical Stimulation, TES)通过电极将特定模式的低强度电流作用于大脑头皮以调控皮层活动, 是一种非侵入、无创的神经刺激方法。根据刺激电流的模式的不同, TES分为经颅直流电刺激(tDCS), 经颅交流电刺激(tACS)和经颅随机电刺激(tRNS)。TES能对视功能诸如光幻视阈值、视野、对比敏感度、视知觉运动等进行一定程度上的调控, 并且能够与传统的视觉知觉学习训练相结合以调控视觉功能。对于不同的视觉功能, 不同的TES参数和模式的调控效果有所不同。     

“THAT’S HOW THEY TAUGHT US TO DO IT”: Learned Deviance and Inadequate Deterrents in Retail Banking

The recent reports of Wells Fargo and Morgan Stanley being engaged in widespread fraudulent sales practices in the retail banking industry make this field a timely and interesting area of study. The current study expands upon previous research examining retail banking deviance and seeks to further explore potential causes of such conduct. Specifically, the current study seeks to explore whether the underlying deviance is being taught by senior employees and also whether current ethics and compliance policies are adequate deterrents. To achieve this goal, the current study utilizes an approach mirroring a qualitative case study. Results indicate that new employees are being taught these fraudulent practices and that current ethics and compliance practices and policies are largely ineffective in curtailing such conduct. Informed by these findings, policy recommendations are presented.     

When I and me are different: assimilation and contrast in temporal self‐comparisons

In two studies, we show that comparisons with past or possible future selves shape current self‐evaluation and that the direction of this influence is determined by one's current comparison focus. In Study 1, participants primed to focus on similarities versus dissimilarities were asked to remember an introverted or extraverted past self and then to evaluate their current level of extraversion. Participants who focused on similarities assimilated current self‐evaluations to the past self, whereas those who focused on dissimilarities contrasted current self‐evaluations away from the past self. In Study 2, participants imagined a possible future self that differed from their current self in terms of body weight. Participants who imagined a moderate weight change exhibited assimilation to the possible self, whereas those who imagined an extreme weight change exhibited contrast. These studies highlight the important role cognitive factors such as comparison focus play in shaping the consequences of temporal self‐comparisons. Copyright © 2009 John Wiley & Sons, Ltd.     

Impact of depression on response to comedy: a dynamic facial coding analysis

Individuals suffering from depression show diminished facial responses to positive stimuli. Recent cognitive research suggests that depressed individuals may appraise emotional stimuli differently than do nondepressed persons. Prior studies do not indicate whether depressed individuals respond differently when they encounter positive stimuli that are difficult to avoid. The authors investigated dynamic responses of individuals varying in both history of major depressive disorder (MDD) and current depressive symptomatology (N = 116) to robust positive stimuli. The Facial Action Coding System (Ekman & Friesen, 1978) was used to measure affect-related responses to a comedy clip. Participants reporting current depressive symptomatology were more likely to evince affect-related shifts in expression following the clip than were those without current symptomatology. This effect of current symptomatology emerged even when the contrast focused only on individuals with a history of MDD. Specifically, persons with current depressive symptomatology were more likely than those without current symptomatology to control their initial smiles with negative affect-related expressions. These findings suggest that integration of emotion science and social cognition may yield important advances for understanding depression.     

Influences on current mood of eliciting life-satisfaction judgments

Subjective well-being (SWB) has attracted a plethora of cross-disciplinary research in recent years. As measured in this research, SWB includes a cognitive and an affective component. We hypothesize that eliciting the cognitive component by means of life-satisfaction judgments activates thoughts about positive and negative life circumstances that influence the affective component (current mood or memory of the frequency of past positive and negative affects). Experiment 1 demonstrates an expected asymmetrical carryover effect in that current mood correlates higher with life-satisfaction judgments performed before than after the measurements of current mood. In Experiment 2, it is found that inducing current mood by means of rewarding performance does not influence the life-satisfaction judgments. In contrast and consistent with Experiment 1, Experiment 3 shows such an influence when current mood is induced by thinking about positive and negative life circumstances.     

Inclusion-exclusion of positive and negative past selves: mood congruence as information

The current research challenges the widespread truism that recalling a positive self necessarily increases self-esteem, whereas recalling a negative self necessarily decreases self-esteem. Four experiments demonstrate that chronically happy people show a relative increase in self-esteem by recalling either a positive or a negative self. Chronically sad people, however, show a relative decrease in self-esteem by recalling either a positive or a negative self. These effects are due to divergent perceptions of mood congruence between the recalled self and the current self. Specifically, happy people perceive high mood congruence between a recalled positive self and the current self but low mood congruence between a recalled negative self and the current self. In contrast, sad people perceive high mood congruence between a recalled negative self and the current self but low mood congruence between a recalled positive self and the current self. Independent of chronic mood, mood congruence leads to perceptions of temporal recency, whereas mood incongruence leads to perceptions of temporal distance. In line with the inclusion-exclusion model of social judgment, perceived temporal recency elicits assimilation effects on self-esteem, whereas perceived temporal distance elicits contrast effects on self-esteem.     

The relation of the conceptual self to recent and distant autobiographical memories

Based on the self-memory system model (SMS; Conway, Singer, & Tagini, 2004) of autobiographical memory, this study uses a large sample of young and middle-aged adults to investigate the relation between individuals’ current self-characteristics and the content of both their earliest childhood memory and a recent memory. In the first session, participants’ current self-characteristics were assessed. In the second session, individuals provided a written narrative of their earliest childhood memory and a more recent memory (within-participants design) and rated the self themes present in each memory. In keeping with the SMS model, findings show that current self-characteristics were reflected in individuals’ memories. As predicted, however, recent memories were more frequently linked to current self-characteristics than were earliest memories. All six current self-characteristics predicted the inclusion of these themes in recent memories, but only four self-characteristics were associated with memory themes in earliest memories. The relation between current self-characteristics and memory themes did not differ across young and middle-aged adults, suggesting developmental stability in these relations. Findings provide general support for the SMS model but also suggest possibilities for its extension and refinement.     

Electrocutaneous spatial integration at threshold: The effects of electrode size

Five experiments were carried out to investigate the effects of electrode size on threshold for current pulses that flowed between the ventral and dorsal sides of the right forearm. The main result was that the total current threshold decreases as the size of the cathode and anode increases at least up to 15 mm in diameter. To account for this finding, a neural summation model was proposed, assuming that the central nervous system sums up neural impulses discharged near the conduction paths under electrodes. It was also found that the current flowing from the dorsal to the ventral side provided lower thresholds and more stable localization than the opposite flow of current did. This finding suggested that current threshold and its perceived locus are determined by both the body site on which electrodes were placed and the relative polarity that was assigned to electrodes.     

Dear old love: Effects of reflecting on nostalgic memories about ex-partners on current romantic relationship

Research on the impact of ex-romantic partners on current romantic relationships is mainly focused on negative aspects. Here instead we focus on the potential positive influence of reflecting on nostalgic memories of one's ex-partner. In three studies, we found that reflecting on nostalgic memories of one's ex-partner increased the perception of current relationship quality (Studies 1– 3) and approach motivation towards the current relationship (Study 3), compared to a control condition. We also tested a potential underlying mechanism—perception of self-growth. We found that perception of self-growth mediated the positive effects of reflecting on nostalgic memories about an ex-partner on perceived current relationship quality (Studies 2 and 3) and approach motivation in the current relationship (Study 3). Implications for research and therapy are discussed.     

Fluctuations in pre-trial attentional state and their influence on goal neglect

Fluctuations in attentional state and their relation to goal neglect were examined in the current study. Participants performed a variant of the Stroop task in which attentional state ratings were given prior to each trial. It was found that pre-trial attentional state ratings predicted subsequent trial performance, such that when participants rated their current attentional state as highly focused on the current task, performance tended to be high compared to when participants reported their current attentional state as being unfocused on the current task. This effect was larger for incongruent than congruent trials leading to differences in the magnitude of the Stroop effect as a function of pre-trial attentional state. Furthermore, variability in attentional state was correlated with overall levels of performance, and when attentional state was covaried out, the Stroop effect was greatly reduced. These results suggest a link between fluctuations in pre-trial attentional state and goal neglect.     

State and trait depression and suicidality

In a sample of 68 undergraduates, current depression scores predicted current suicidal ideation while depressive personality scores predicted prior suicidal ideation.     

Agoraphobia with and without current panic attacks

MMPI and SCL-90-R profiles of agoraphobics with and without current panic attacks are presented. Agoraphobics with current panic attacks were more elevated on Psychopathic Deviate (4), Psychasthenia (7), and Social Introversion (0) scales of the MMPI. On the SCL-90-R agoraphobics with current panic attacks had higher scores on Interpersonal Sensitivity, Anxiety, Phobic Anxiety, and Total/90.