Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： As a common strategy used to lose weight in female group, restrained eating becomes increasingly popular nowadays. However, previous studies have proved that it was not an effective method to lose or maintain weight. Although restricting their consumption consciously, in many circumstances, restrained eaters are even easier to overeat compared with unrestrained ones. Many studies have explored the causes of restrained eaters’ overeating and factors influencing it. This article reviewed researches about overeating among restrained eaters at home and abroad and summarized the two psychological mechanisms: attentional bias and inhibitory control deficit. What’s more, this article also generalized five influencing factors of overeating among restrained eaters, including preload, emotional arousal, ego depletion, cognitive resource distraction, personality and social factors. At last, we discussed inadequacies of previous studies and looked forward to the future researching directions.
Subjects: Psychology >> Developmental Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Negative body image is one of the most important problems affecting adolescents’ healthy growth. Understanding the harm of negative body image to adolescents and its influencing factors is of great significance to the physical and mental health of adolescents. The negative effects of negative body image on adolescents mainly include five aspects: self-concept, emotional experience, weight control strategies, eating disorder and social life; and the main influencing factors of adolescents' negative body image formation are biological factors (BMI), sociocultural factors (parents, peers and mass media) and psychological factors (personality factor and cognitive style). Future research is needed to further (1) develop the theoretical model of adolescent body image development from the perspective of biopsychosocial model; (2) examine the role of emerging factors such as social media; (3) elucidate the cognitive processing characteristics of adolescents in processing body-related information; (4) accelerate the localization speed of negative body image amongst Chinese adolescents.
Subjects: Psychology >> Social Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Longitudinal research could systematically capture the change of the target variable and thus is more convincing than cross-sectional research. It is popular in the fields of social sciences such as psychology, management, statistics, sociology, etc. The present study reviews the methodology study and model development for analyzing longitudinal data in China’s mainland. We aim to retrospect the methods used, the main research questions, and the popular research domains in longitudinal models. The target publications ranged from 1st Jan. 2001 to 31st Dec. 2020 in CNKI core collections in the relative domains, and finally, 75 articles met our selecting criterion. Results also indicated that the research topic widely includes latent growth model, multilevel modeling, autoregression, cross-lagged model, missing data, etc. Among these research topics, latent growth model ranked as the first. Typically, the latent growth model and experience sampling method were favored in the field of psychology. There are mainly four research questions retrieved from the publications. The first research question is to compare the mean difference, which is less popular. The second research question is to examine the reciprocal relationship between variables. It often uses the cross-lag model and the causal model to reveal the autoregressive and cross-lagged relationships within and between variables. The third research question is to depict growth trajectory with individual differences. It uses the latent growth model (LGM) and multilevel model (MLM) as the main methods to show a growth trajectory from the between-person perspective, as well as the individual difference included. The last one is to explore the dynamic changes. This research question does not focus on the general tendency of change but on the fluctuation between different time points. It usually uses autoregression with its extensions, MLM, time-varying effect model, and some newly developed models such as the dynamic structural equation model. The recent 20 years' publication broadens the domains of longitudinal models, such as the extension of the shape and pattern of growth, the combination of latent class analysis leading to growth mixture model and latent transition analysis. The causal effect, longitudinal mediation and moderation models are also introduced to reveal the relationship between variables. Meanwhile, models depicting growth trajectory with individual differences combines with models examining reciprocal relationships, thus they were extended and integrated to random intercept cross-lagged model, latent variable autoregressive latent trajectory, as well as general cross lagged model. Furthermore, research design becomes more complex; the intensive longitudinal data was introduced and thus the models were according developed, such as MLM, time-varying effect model, dynamic structural equation model, group iterative multiple model estimation, and so forth. Particularly, missing data issue is also hot discussed in the field. To summarize, methodology study for analyzing longitudinal data in China’s mainland has made fruitful development on the above topics and are in an advanced position all over the world. However, when comparing to the international scope, publications in China’s mainland are limited in narrow range. Many topics need to keep up with the international pace, which is a direction that Chinese scholars need to make efforts. Another future direction is to learn from other disciplines to promote the development of interdisciplinary.
Subjects: Psychology >> Social Psychology submitted time 2023-03-28 Cooperative journals: 《心理科学进展》
Abstract： Psychological resilience refers to the process of effective and flexible adaptation in the face of adversity, trauma, tragedy, threats, and other significant sources of stress. It helps the organism restore to a normal physiological and psychological status. Psychological resilience plays a major mediating role in the development of post-traumatic mental illness in individuals. It can predict the negative emotions after stress and determine the adaptation to stress. It has a significant influence on physical and mental health. Previous studies have shown that the hippocampus plays an important role in psychological resilience, and oxytocin may promote psychological resilience by modulating the hippocampus. However, the specific regulation mechanisms of them have not yet been systematically researched and elucidated. This review focuses on the role of oxytocin in the hippocampus on regulating psychological resilience and try to clarify the underlying mechanisms. It can help to further understand the mechanisms of psychological resilience and help to reduce the incidence of post-traumatic mental illness. Hippocampus regulates psychological resilience through the internal and external projection circuits. On the internal circuit of the hippocampus, studies suggest that “entorhinal cortex-dentate gyrus-CA3” circus in the hippocampus may improve psychological resilience by reducing the generalization or promoting the extinction of stress-related memory. On the external circuit of the hippocampus, the “dentate gyrus-amygdala-nucleus accumbens” circuit and the “hippocampus-nucleus accumbens” circuit may enhance or reduce psychological resilience by promoting reward and disgust, respectively. There is a opposite effect on psychological resilience from the projection of the hippocampus to nucleus accumbens directly or indirectly. The basolateral amygdala may play a key role. Studies have shown that stress can cause complex interactions among basolateral amygdala, hippocampus and nucleus accumbens, so more research is necessary conducted to better understand its specific mechanisms. Oxytocin may regulate the hippocampus through four ways to improve psychological resilience. First, oxytocin promotes the neurogenesis of the hippocampus under stress by acting on the oxytocin receptor at the hippocampal CA3 pyramidal neurons. This can reduce the stress-induced harm. Second, oxytocin reduces the sensitivity of mature neurons in ventral hippocampus to stress by stimulating dentate gyrus neurogenesis. This can enhance the function of “pattern separation” in the dentate gyrus–CA3 circuit and reduce the generalization of stress-associated memory. Third, oxytocin increases the synaptic cell signaling pathway kinase levels on the CA3-CA1 pathway and promotes the ability of adaptation to stress by rescuing stress-induced impairments in NMDA receptor-dependent long-term potentiation of hippocampal Schaffer collateral-CA1 synapses. At last, oxytocin interacts with glucocorticoids and catecholamine systems to increase oxytocin release. The oxytocin release can inhibit the function of the hypothalamic–pituitary–adrenal axis and reduce hippocampal glucocorticoid receptor levels. This protects the structure and function of the hippocampus from glucocorticoid damage and re-establishes brain homeostasis. So, oxytocin can further adjust the stress-related memory and enhance psychological resilience. At the same time, research suggests that oxytocin regulates psychological resilience by affecting the structure and function of the hippocampus, which might differ among individuals of different genders or experiences. In terms of individual diagnosis and treatment, it is necessary to combine these factors for reasonable treatment. Besides, the interaction between genes and the environment is also needed to be considered. To improve psychological resilience in a targeted manner, individual characteristics, interpersonal relationships, and emotional support needs to be considered in the treatment of stress-related mental illness. Finally, exploring the neural mechanisms of psychological resilience should be closely integrated with human research and animal research to make up for the deficiencies of each research. Future research should combine various technologies such as human brain imaging and animal neural circuits technologies to determine the fine brain structures and circuits that regulate psychological resilience.
Subjects: Psychology >> Social Psychology submitted time 2023-03-27 Cooperative journals: 《心理学报》
Abstract： Humans are a social species that are constantly involved in complex relationships, reacting to the actions of others, and intentionally or unintentionally changing our own behavior. Personality traits reflect the behavioral pattern of an individual's response to the environment, which also includes social behavior. In addition, the brain is also an important factor when discussing social networks. The brain provides biological mechanisms for human behavior, while social networks provide external triggers for these behaviors. Linking personality traits and brain activity to social networks can help us better understand the structure of group relationships, improve our understanding of individual human beings, and help us better predict individual social behaviors and find the rules of information transmission in interpersonal relationships. From the perspective of a network, we collected nine social networks from 94 undergraduate students in the same grade according to their different social needs. We used the graph theory and resting-state functional magnetic resonance imaging to explore the influence of personality traits on social networks based on individual popularity and closeness between individuals and the relationship between the similarity of brain resting-state functional connectivity and social distance between individuals. Specifically, regression analysis was carried out, with personality traits as the independent variables and the different degrees of social networks as the dependent variables. Then, a correlation analysis was performed for the social distance and similarity of personality traits. Finally, the correlation between the similarity of the brain networks and social distance was calculated. The results showed that (1) individuals with high conscientiousness were more popular in social networks requiring "trust" traits, while individuals with high agreeableness were more popular in social networks requiring "fun" traits. These findings showed that in the same group, there are different social networks according to social needs, and the popularity of individuals in different social networks is not similar as it will be affected by the corresponding personality traits; (2) In the social networks requiring "shared interests & values, " personality similarity and social distance between individuals were significantly negatively correlated. Personality similarity promotes interpersonal communication between individuals, which may be realized through interpersonal attraction induced by the similarity of values and interests; (3) In the same social network, there is a significantly negative correlation between similarities in functional connections (FCs) and social distance among individuals, and these FCs are mainly concentrated in the fronto-parietal task control network and the dorsal attention network. The similarity of resting brain FCs among individuals may promote interpersonal communication, possibly due to the similarity of individuals in cognitive control and environmental processing bias, which increases the interpersonal attraction and shortening the social distance between individuals. The results revealed the influence of personality traits on the structure of different social networks, the relationship between personality trait similarity among individuals, and the similarity between resting brain networks and social distance, which has important implications for understanding the structure of social networks, the formation rules, and the information transmission rules among them. In addition, this study discussed the relationship between the similarity of resting-state FC and social distance, providing new evidence for studies on brain synchronization in interpersonal communication and brain imaging evidence for the study of the relationship between the similarity of personality traits and social distance.#social networks, personality traits, resting-state functional connectivity
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