ACTIVITY IN CORTICAL MIDLINE STRUCTURES IS MODULATED BY SELF-CONSTRUAL CHANGES DURING ACCULTURATION

Use of self-referencing memory strategies change over time with acculturation

Although cross-cultural research identifies cognitive differences when comparing across individuals, few studies have examined how acculturation, or cultural change over time within individuals, affects cognition. To address this gap, we investigated how acculturation and change in self-construal for Chinese students in the US impacts the self-reference effect in memory over two timepoints. Participants completed a self-referencing memory task and a set of questionnaires assessing acculturation orientation and self-construal over two time points, on average 16 months apart. As individuals' orientation towards host culture and independence increased over the two time points, they exhibited a larger self-reference effect (self vs. other) in memory and a smaller other-reference (other vs. control) effect. These patterns indicated that as Chinese students became more acculturated to US culture, they exhibited more US-like patterns of behavior in memory. In contrast, between-participant variability in acculturation orientation and independence were not related to self- or other-referencing.

Neural substrates of marriage on self-parents processing and the association with a parents-oriented perspective shift in a collectivistic culture

Relationship with parents is a special bond that shapes self-other representations and have an impact on adult-child's marriage, especially in the early stages of marriage. This study sought to investigate the neural mechanisms underlying self-parents processing as well as their relationship with marriage. Seventy-eight premarital Korean participants were scanned in functional MRI while evaluating traits of the self and parents. Then, 21 of them returned after being married to engage in the identical task three years later. The precuneus and temporoparietal junction were identified to activate stronger for parents than self at both marital statuses. The dorsal anterior cingulate cortex, posterior cingulate cortex, parietal operculum, and caudate activated more for self than parents before marriage, but their activities changed during marriage. The activation increase of the parietal operculum between marital statuses in the parents condition was negatively correlated with the level of marital dissatisfaction, and this association only appeared among participants with a child. Self-parents processing may recruit brain regions involved in autobiographical memory and self-other distinction, and marriage has an impact on the way individuals process rewards and multimodal sensory information during this processing. Marriage may lead to changes in brain function that affect the processing of emotions toward parents and a more parents-oriented perspective shift in collectivistic societies.

Influence of acculturation and cultural values on the self-reference effect

Cultural milieu can influence the way information is processed and what strategies are employed to deal with ever-changing environments. This study assessed whether acculturation and cultural values of East Asians can affect memory, with a specific focus on the self-reference effect in Chinese international students. Participants encoded and retrieved adjectives, with some trials relating the words to the self (i.e., the self-referencing task), another person, or a control condition; participants also completed questionnaires assessing cultural adaptation and self-construal. Results did not show a relationship between acculturation orientation and self-construal and the magnitude of the self-reference effect in memory, defined as better memory for adjectives encoded related to the self compared to those related to close others, in this sample of Chinese international students. Future research should explore effects of acculturation over time, incorporating more heterogeneous samples and sensitive neural measures.

Medial Prefrontal Activity During Self-Other Judgments is Modulated by Relationship Need Fulfillment

The medial prefrontal cortex (MPFC) plays an important role in representing semantic self-knowledge. Studies comparing semantic self-judgments with judgments of close others suggest that interpersonal closeness may influence the degree to which the MPFC differentiates self and other. We used optical neuroimaging to examine if support for competence, relatedness, and autonomy from relationship partners moderates MPFC activity during a personality judgement task. Participants (N = 109) were asked to judge the descriptive accuracy of trait adjectives for both themselves and a friend. Participants who reported lower need fulfillment with their friend showed elevated activity only in the self-judgment condition; in contrast, participants who reported higher need fulfillment with their friend showed similarly high levels of MPFC activity across the conditions. These results are consistent with the idea that the MPFC differentially represents others on the basis of the need fulfillment experienced within the relationship.

Taking a Computational Cultural Neuroscience Approach to Study Parent-Child Similarities in Diverse Cultural Contexts

Parent-child similarities and discrepancies at multiple levels provide a window to understand the cultural transmission process. Although prior research has examined parent-child similarities at the belief, behavioral, and physiological levels across cultures, little is known about parent-child similarities at the neural level. The current review introduces an interdisciplinary computational cultural neuroscience approach, which utilizes computational methods to understand neural and psychological processes being involved during parent-child interactions at intra- and inter-personal level. This review provides three examples, including the application of intersubject representational similarity analysis to analyze naturalistic neuroimaging data, the usage of computer vision to capture non-verbal social signals during parent-child interactions, and unraveling the psychological complexities involved during real-time parent-child interactions based on their simultaneous recorded brain response patterns. We hope that this computational cultural neuroscience approach can provide researchers an alternative way to examine parent-child similarities and discrepancies across different cultural contexts and gain a better understanding of cultural transmission processes.

Changing cultures, changing brains: A framework for integrating cultural neuroscience and cultural change research

Cultural neuroscience research has provided substantial evidence that culture shapes the brain by providing systematically different sets of experiences. However, cultures are ever-changing in response to the physical and social environment. In the present paper, we integrate theories and methods from cultural neuroscience with the emerging body of research on cultural change and suggest several ways in which the two fields can inform each other. First, we propose that the cultural change perspective helps us reexamine what is meant by culturally typical experiences, which are shaped by the dynamic interaction between cultural norms, values, meanings, and other environmental constraints on behavior. It also allows us to make predictions about the variability/stability of cultural neural differences over time. Then, we discuss how methods used in cultural change research may be applied to cultural neuroscience research and vice versa. We end with a "blue sky vision" for a neuroscience of cultural change.

Common and unique effects of HD-tDCS to the social brain across cultural groups

Cultural background influences social cognition, however no study has examined brain stimulation differences attributable to cultural background. 104 young adults [52 South-East Asian Singaporeans (SEA); 52 Caucasian Australians (CA)] received anodal high-definition transcranial direct current stimulation (HD-tDCS) to the dorsomedial prefrontal cortex (dmPFC) or the right temporoparietal junction (rTPJ). Participants completed tasks with varying demands on self-other processing including visual perspective taking (VPT)and episodic memory with self and other encoding. At baseline, SEA showed greater self-other integration than CA in the level one (line-of-sight) VPT task as indexed by greater interference from the alternate perspective. Anodal HD-tDCS to the dmPFC resulted in the CA performing closer to the SEA during egocentric perspective judgements. Baseline performance on level two (embodied rotation) VPT task and the self-reference effect (SRE) in episodic memory was comparable between the two groups. In the combined sample, HD-tDCS to the rTPJ decreased the interference from the egocentric perspective during level two VPT and dmPFC HD-tDCS removed the SRE in episodic memory. Stimulation effects were comparable when baseline performance was comparable. When baseline performance differed, stimulation differences were identified. Therefore, social cognitive differences due to cultural background are an important consideration in social brain stimulation studies.

Neural systems for reflected and direct self-appraisals in Chinese young adults: Exploring the role of the temporal-parietal junction

OBJECTIVES

Although cortical midline structures (CMS) are the most commonly identified neural foundations of self-appraisals, research is beginning to implicate the temporal-parietal junction (TPJ) in more interdependent self-construals. The goal of this study was to extend this research in an understudied population by (a) examining both direct (first-person) and reflected (third-person) self-appraisals across 2 domains (social and academics), and (b) exploring individual differences in recruitment of the TPJ during reflected self-appraisals.

METHOD

The neural correlates of direct and reflected self-appraisals in social and academic domains were examined in 16 Chinese young adults (8 males, 8 females; aged 18-23 years) using functional MRI.

RESULTS

As expected, when making reflected self-appraisals (i.e., reporting what they believed others thought about them, regardless of domain), Chinese participants recruited both CMSs and the TPJ. Similar to previous research in East Asian and interdependent samples, CMSs and the TPJ were relatively more active during direct self-appraisals in the social than in the academic domain. We additionally found that, to the extent participants reported that reflected academic self-appraisals differed from direct academic self-appraisals, they demonstrated greater engagement of the TPJ during reflected academic self-appraisals. Exploratory cross-national comparisons with previously published data from American participants revealed that Chinese young adults engaged the TPJ relatively more during reflected self-appraisals made from peer perspectives.

CONCLUSIONS

In combination with previous research, these findings increase support for a role of the TPJ in self-appraisal processes, particularly when Chinese young adults consider peer perspectives. The possible functional contributions provided by the TPJ are explored and discussed. (PsycINFO Database Record

Dynamic self-representation of interdependent Chinese: The effect of bicultural experience

The process of globalisation has increased the opportunity for Chinese individuals to utilise influences from other cultures that differ from their own collectivistic culture. The explorations of the impact of acculturation on Chinese individuals' self-construals have become intriguing. Thus, we recruited German-Chinese (N = 192) people who live in Germany and had direct bicultural experiences, as well as Mainland-Chinese (N = 192) people who live in Mainland China and had internalised a second culture through more indirect means of exposure. We investigated their accessibility to both interdependent and independent cultural frameworks using temporal self-construal priming. The results showed that priming effects were observed in both cultural groups. However, the self-construals of the German-Chinese participants were more flexible than those of Mainland-Chinese under self-construal priming. Also, the results suggested that women were easier to be influenced by direct bicultural experiences, due to their private and collective self were different between the two cultures. These findings provide evidence regarding the opinion that individuals could use influences from more than one culture. More importantly, these results suggest that the acculturation induced by direct bicultural experiences facilitates cultural frame switching.