国際誌論文データベース

Hiraoka, D.（平岡大樹）, & Nomura, M. (野村理朗) （2019）.
Maternal Childhood Adversity, OXTR Genotype and Cognitive Load Impact on Perceptual and Behavioral Responses to Infant Crying
乳児泣き声への反応に母親の被養育経験・オキシトシン受容体遺伝子多型・認知的負荷が影響を与える
Psychoneuroendocrinology, 104, 195-202.
doi: 10.1016/j.psyneuen.2019.03.005

The crying of infants elicits aversive feelings and poses. Maternal childhood maltreatment can have negative parenting ability consequences and interact with the oxytocin receptor (OXTR) single nucleotide polymorphism (rs53576) to predict maternal response to infant distress stimuli. Recent studies have highlighted the importance of individual vulnerability differences to situational cognitive load in parenting situations. The current study, in which 124 mothers participated in a standardized infant vocalization paradigm, examined three-way interaction on subjective empathy, behavior intention, and handgrip force response to a crying infant. Participants were asked to squeeze a handgrip dynamometer at maximal and half strength while memorizing a meaningless alphabet syllable as the cognitive load manipulation. Significant interactions were also observed between OXTR rs53576, childhood adversity, and cognitive load when predicting excessive force and harsh response intention on hearing a crying infant. These findings suggested that, as the G allele carriers of OXTR rs53576 appear to be susceptible to the effects of severe childhood adversity, inter- and intra-individual approaches are needed when assessing maternal responses to infant stimuli.

Omi, Y.　（尾見康博）(2019).
Corporal punishment in extracurricular sports activities (bukatsu) represents an aspect of Japanese culture.
部活における体罰は日本文化の一側面を表している
In L.Tateo (ed.) Educational dilemmas: A cultural psychological perspective. NY: Routledge Pp.139-145.

Yoshiya Furukawa (古川善也), Ken'ichiro Nakashima (中島健一郎), Tsukawaki, R. (塚脇涼太)& Yasuko Morinaga (森永康子) (2019).
Guilt as a signal informing us of a threat to our morality.
道徳性への脅威を知らせるシグナルとしての罪悪感
Current Psychology
doi: 10.1007/s12144-019-0144-4

Some studies have shown the possibility that people feel guilt not only due to interpersonal problems but also when experiencing threats to their own internal morality (e.g. Eskine et al. Journal of Experimental Social Psychology, 49(5), 947-950, 2013), whereas other studies have shown that guilt-induced behaviours can restore individuals’ sense of moral person (e.g. Gneezy et al. Management Science, 58(1), 179–187, 2012; Zhong et al. Journal of Experimental Social Psychology, 46(5), 859–862, 2010). These findings suggest that guilt can strongly reflect how much individuals deviate from what they perceive to be adequate moral person. Therefore, we proposed that guilt works as an alert system that signals people about threats to their morality. We used the Implicit Association Test (Greenwald et al. Journal of Personality and Social Psychology, 74(6), 1464-1480, 1998) to investigate if an individual’s moral self decreased in the situation where that individual felt guilt. Results showed that implicit moral self in the guilt condition was lower than that in the control condition when controlling for individual variation in moral self. Our findings provide a new perspective on the function of guilt and generate new hypotheses about the relationship between guilt and behaviours.

Furukawa, Y. (古川善也), Nakashima, K. (中島健一郎), & Morinaga, Y. (森永康子) (2019).
Guilt Signals a Crisis of Rejection: Two Types of Individual Differences Related to Social Rejection Have Dissimilar Effects on Guilt and Compensatory Behavior.
罪悪感は排斥の脅威をシグナルする：2つのタイプの社会的排斥に関する個人差が罪悪感と補償行動に異なる効果を持つ。
Japanese Psychological Research, 61(1), 1-11. 
doi: 10.1111/jpr.12199

We investigated whether feelings of guilt, which signal crises in interpersonal relationships (Baumeister, Stillwell, & Heatherton, 1994), are differently evoked by two types of individual differences in social rejection: rejection detection capability (Kawamoto, Nittono, & Ura, 2015) and rejection sensitivity (Downey & Feldman, 1996). Using the hypothetical scenario method, we found that in situations with a potential risk of being rejected as a consequence of causing another person harm (i.e., harm‐present condition), participants with higher rejection detection capability felt more guilt and engaged in more compensatory behavior towards the victims. In addition, guilt mediated the relationship between rejection detection capability and compensatory behavior. Conversely, in situations with no potential risk of being rejected (i.e., harm‐absent condition), participants with higher rejection sensitivity felt more guilt but did not engage in much compensatory behavior. These results suggest that individual differences in social rejection foster different responses to specific threats.

Toyokawa, W. (豊川 航), Whalen, A. & Laland, NK. (2019).
Social learning strategies regulate the wisdom and madness of interactive crowds.
社会的学習戦略が群知能と集合愚とを制御する
Nature Human Behaviour, 
doi: 10.1038/s41562-018-0518-x

Why groups of individuals sometimes exhibit collective ‘wisdom’ and other times maladaptive ‘herding’ is an enduring conundrum. Here we show that this apparent conflict is regulated by the social learning strategies deployed. We examined the patterns of human social learning through an interactive online experiment with 699 participants, varying both task uncertainty and group size, then used hierarchical Bayesian model fitting to identify the individual learning strategies exhibited by participants. Challenging tasks elicit greater conformity among individuals, with rates of copying increasing with group size, leading to high probabilities of herding among large groups confronted with uncertainty. Conversely, the reduced social learning of small groups, and the greater probability that social information would be accurate for less-challenging tasks, generated ‘wisdom of the crowd’ effects in other circumstances. Our model-based approach provides evidence that the likelihood of collective intelligence versus herding can be predicted, resolving a long-standing puzzle in the literature.

Hashimoto, T. (橋本剛明), & Karasawa, K. (唐沢かおり) (2018).
Impact of consumer power on consumers' reactions to corporate transgression.
企業不祥事への消費者の反応に勢力が与える影響
PLoS ONE, 13(5), e0196819. 
doi: 10.1371/journal.pone.0196819

We addressed how individuals’ power influences their judgments regarding corporate transgressions. Based on the Situated Focus Theory of Power, which theorizes that powerful people respond more in accordance to circumstantial factors, we tested the interaction of power and the type of corporate discourse offered by the accused company. Across two studies (overall N = 216), we experimentally primed power (Study 1) and manipulated participants’ sense of direct control over the company (Study 2). We consistently found an interaction effect of power and corporate discourse on people’s negative attitudes toward the company—particularly on the unwillingness to use the company’s products. Particularly, high-power individuals were prone to strongly vary their attitudes based on the mitigative/non-mitigative nature of the discourse, while those low in power were unsusceptible to the type of discourse. The results suggest how the potential rise of consumer power in society may critically influence the consumer-corporate relationships following corporate transgressions.

Kase, T. (嘉瀬貴祥), Ueno, Y., Shimamoto, K., & Oishi, K. (2019).
Causal relationships between sense of coherence and life skills: Examining the short-term longitudinal data of Japanese youths.
Sense of coherenceとライフスキルの因果関係―日本人青年の短期縦断的データを用いた検討―
Mental Health & Prevention, 13(1), 14-20.
doi: 10.1016/j.mhp.2018.11.005

This study investigated the causal relationships between sense of coherence (SOC) and life skills. Participants (248 university students; 147 men, 101 women; mean age = 20.4 years, SD = 0.9 years) completed the Japanese version of the SOC-29 scale and the Life Skills Scale for Adolescents and Adults. Structural equation modeling (a synchronous effects model and a cross-lagged effects model) indicated that life skills had a certain effect (β = .55 to .75, p < .01) on SOC. This result suggests that improving life skills was effective in strengthening SOC. The findings of this study provide key information concerning the dimensions and stages of SOC and life skills. This can be used to construct a theoretical model and framework for future practical studies on strengthening SOC and conducting life skills training.

Kase, T. (嘉瀬貴祥), Ueno, Y., & Oishi, K. (2018).
The overlap of sense of coherence and the Big Five personality traits: A confirmatory study.
Sense of coherenceとBig Five性格特性との関係についての検証的研究
Health Psychology Open, 5(2), 1-4.
doi: 10.1177/2055102918810654

Sense of coherence is the perception of the world as coherent. Its conceptual similarities to the Big Five personality traits have been demonstrated. We therefore investigated the relationship between sense of coherence and the Big Five. In total, 1088 Japanese youths completed the 29-item Sense of Coherence Scale and the Ten-Item Personality Inventory. Neuroticism was negatively correlated and extraversion was positively correlated with comprehensibility (r = −.47, .35), manageability (r = −.44, .26), and meaningfulness (r = −.28, .30). These correlations were strong, and the overlap between the two scales was about 36 percent. While the Big Five are related to sense of coherence, their differences cannot be ignored.

Matsunaga, M., Masuda, T. (増田貴彦), Ishii, K. (石井敬子), Ohtsubo, Y. (大坪庸介), Noguchi, Y., Ochi, M. (越智美早), & Yamasue, H. (2018). 
Culture and cannabinoid receptor gene polymorphism interact to influence the perception of happiness. 
文化とカンナビノイド受容体遺伝子多型が相互作用し幸せの知覚に影響する
PLoS ONE, 13, e0209552. 
doi: 10.1371/journal.pone.0209552

Previous studies have shown that a cytosine (C) to thymine (T) single nucleotide polymorphism (SNP) of the human cannabinoid receptor 1 (CNR1) gene is associated with positive emotional processing. C allele carriers are more sensitive to positive emotional stimuli including happiness. The effects of several gene polymorphisms related to sensitivity to emotional stimuli, such as that in the serotonin transporter gene-linked polymorphic region (5HTTLPR), on emotional processing have been reported to differ among cultures–e.g., between those that are independent and interdependent. Thus, we postulated that the effects of the CNR1 genotype on happiness might differ among different cultures because the concept of happiness varies by culture. We recruited healthy male and female young adults in Japan, where favorable external circumstances determine the concept of happiness, and Canada, where the concept of happiness centers on positive inner feelings, and compared the effects of the CNR1 genotype on both subjective happiness levels (self-evaluation as being a happy person) and situation-specific happiness (happy feelings accompanying various positive events) by using a questionnaire. We found that the effect of CNR1 on subjective happiness was different between the Japanese and Canadian groups. The subjective happiness level was the highest in Japanese individuals with the CC genotype, whereas in Canadian participants, it was the highest in individuals with the TT genotype. Furthermore, the effects of CNR1 genotype on situation-specific happiness were also different between the groups. Happiness accompanied with being surrounded by happy people was the highest among Japanese individuals with the CC genotype, whereas among Canadian individuals, it was the highest in TT genotype carriers. These findings suggest that culture and CNR1 polymorphism interact to influence the perception of happiness.

Yamamoto, H.(山本仁志), & Suzuki, T.(鈴木貴久) (2018).
Effects of beliefs about sanctions on promoting cooperation in a public goods game.
サンクションに対する信念が協力に与える影響
Palgrave Communications, 4(1), 148. 
doi: 10.1057/s41599-018-0203-8

Cooperative behaviour among people facing social dilemmas remains an unsolved puzzle. Sanction systems such as punishment and reward are well-known solutions to social dilemmas. On the one hand, it is theorised that peer sanctions cannot maintain cooperation because of the intrusion of second-order free riders. On the other hand, experimental studies have widely reported that cooperation is sustainable by first-order sanction systems. To understand the divergence between theory and experimental results, we focus on the effects of beliefs about sanctions on promoting cooperation. While previous studies have revealed effects of beliefs about other people’s cooperation in public goods games (PGGs), the effect of beliefs about sanctions have not been considered. We conducted a scenario-based experiment using one-shot PGGs with and without sanction systems. The results revealed that beliefs about sanctions promote cooperation in a PGG when types of sanctions and some psychological attitudes to cooperation are controlled for. Our results indicate that the beliefs of actors promote cooperation despite the possible presence of second-order free riders. A belief about sanctions differs from a preference for cooperative behaviour and the amount a player pays to exercise a sanction. It is necessary to consider players’ beliefs about a sanction when studying its effectiveness.