Publications by authors named "Hee Jin Jeon"

3 Publications

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Bias in bias recognition: People view others but not themselves as biased by preexisting beliefs and social stigmas.

PLoS One 2020 9;15(10):e0240232. Epub 2020 Oct 9.

Yonsei University, Seoul, South Korea.

Biases perpetuate when people think that they are innocent whereas others are guilty of biases. We examined whether people would detect biased thinking and behavior in others but not themselves as influenced by preexisting beliefs (myside bias) and social stigmas (social biases). The results of three large studies showed that, across demographic groups, participants attributed more biases to others than to themselves, and that this self-other asymmetry was particularly salient among those who hold strong beliefs about the existence of biases (Study 1 and Study 2). The self-other asymmetry in bias recognition dissipated when participants made simultaneous predictions about others' and their own thoughts and behaviors (Study 3). People thus exhibit bias in bias recognition, and this metacognitive bias may be remedied when it is highlighted to people that we are all susceptible to biasing influences.
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December 2020

Effect of vitamin C on azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced colitis-associated early colon cancer in mice.

Nutr Res Pract 2018 Apr 22;12(2):101-109. Epub 2018 Mar 22.

Department of Nutritional Science and Food Management, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea.

Background/objectives: The objective of this study was to investigate the effects of vitamin C on inflammation, tumor development, and dysbiosis of intestinal microbiota in an azoxymethane (AOM)/dextran sulfate sodium (DSS)-induced inflammation-associated early colon cancer mouse model.

Materials/methods: Male BALB/c mice were injected intraperitoneally with AOM [10 mg/kg body weight (b.w)] and given two 7-d cycles of 2% DSS drinking water with a 14 d inter-cycle interval. Vitamin C (60 mg/kg b.w. and 120 mg/kg b.w.) was supplemented by gavage for 5 weeks starting 2 d after the AOM injection.

Results: The vitamin C treatment suppressed inflammatory morbidity, as reflected by disease activity index (DAI) in recovery phase and inhibited shortening of the colon, and reduced histological damage. In addition, vitamin C supplementation suppressed mRNA levels of pro-inflammatory mediators and cytokines, including cyclooxygenase-2, microsomal prostaglandin E synthase-2, tumor necrosis factor-α, Interleukin , and , and reduced expression of the proliferation marker, proliferating cell nuclear antigen, compared to observations of AOM/DSS animals. Although the microbial composition did not differ significantly between the groups, administration of vitamin C improved the level of inflammation-related and to control levels.

Conclusion: Vitamin C treatment provided moderate suppression of inflammation, proliferation, and certain inflammation-related dysbiosis in a murine model of colitis associated-early colon cancer. These findings support that vitamin C supplementation can benefit colonic health. Long-term clinical studies with various doses of vitamin C are warranted.
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April 2018

Perspectives of future health in self and others: The moderating role of culture.

J Health Psychol 2020 04 20;25(5):703-712. Epub 2017 Sep 20.

Cornell University, USA.

People tend to perceive themselves more favourably than others, but the degree to which individuals exhibit this bias may be influenced by cultural upbringing. Korean ( = 271) and American ( = 503) participants were asked to evaluate current and future health expectations for themselves and others. Results showed that American participants rated their own future health more positively than others' future health, whereas Korean participants rated their own and others' future health similarly. Given its role in patient health behaviour, implications for creating context-sensitive interventions for future health expectations are discussed.
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April 2020