Exploring Consistency in Right Hemispheric Hypothesis and Valence Hypothesis for Perception of Emotions in Brain
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ASSESSMENT
Exploring Consistency in Right Hemispheric Hypothesis and Valence Hypothesis for Perception of Emotions in Brain Deeksha Sharma1 • Rachita Gulati2 • Indiwar Misra3
Received: 14 November 2018 / Accepted: 8 June 2020 Ó National Academy of Psychology (NAOP) India 2020
Abstract The present study explores the consistency of two hemispheric hypotheses of the brain in perception of emotions: right hemisphere hypothesis, and valence hypothesis in the context of emotional intelligence, sex, and age using the sample of 323 participants. Unlike traditional procedures adopted for Chimeric face test, we developed a software for Chimeric face test with the help of APACHE 2.4 platform in PHP 5.2 application in i-7, 5th generation Intel core-based computer system with male and female faces reflecting four states of emotions—happy, fear, anger, and sad—to measure brain laterality. The level of emotional intelligence among participants is measured using Genos Emotional Intelligence test. By employing multivariate logistic regression analysis, the study reveals that the right hemisphere hypothesis is more dominant than the valence hypothesis in the sampled participants, and observes its dominance lucidly in males. Males with higher emotional intelligence have higher right hemisphere hypothesis responses whereas age has no significant impact on its validation. Valence hypothesis has no impact due to emotional intelligence, sex, or age. For female participants, & Deeksha Sharma [email protected]; [email protected] Rachita Gulati [email protected] Indiwar Misra [email protected] 1
Department of Human Development, Cornell University, Ithaca, NY 14850, USA
2
Department of Humanities and Social Sciences, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
3
Delhi University, Delhi, India
the presence of the valence hypothesis is not observed, and higher emotional intelligence suggests fewer right hemisphere hypothesis responses. Keywords Right hemisphere hypothesis (RHH) Valence hypothesis (VH) Chimeric face test Emotional intelligence (EI) Sex differences Age differences
Introduction To understand emotions, it is quintessential to understand the working of the brain. However, the research efforts in the field of hemispheric lateralization for facial emotions have been unable to unequivocally resolve the issue of relative dominance or advantage of the left and right hemispheres for emotion recognition in face stimuli. In this context, two major hypotheses have emerged. The first is right hemisphere hypothesis (RHH) according to which the right hemisphere is dominant in the analysis of all emotions irrespective of their valence in comparison to the left hemisphere (Bourne, 2010; Gainotti, 2019; Hagemann, Hewig, Naumann, Seifert, & Bartussek, 2005). The second is valence hypothesis (VH) according to which the left hemisphere is specialized in the processing of positive emotions and the right hemisphere is specialized in the processing of negative emotions (Adolphs, Ja
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