Effect of Biological Rhythm on Cognitive Performance

  • Ravinder Yadav DRDO Defence Institute of Psychological Research Delhi
  • NP Singh DRDO Defence Institute of Psychological Research Delhi
Keywords: Biological rhythms, Chronotype, Cognitive performance

Abstract

Biological rhythm has contributed in evolution process of humankind and has created certain distinct capabilities and preferences in shaping his phycho-psychological reactions. On the basis of behavioural activities, reactions, preferences and performances during the day-night cycle, individuals are classified in chronotype as morning type (M type) and evening type (E type). Such a differentiation has been hypothesised to contributing to individual differences at the cognitive, affective and conative levels. The present study was an attempt to further study such differentiation in terms of neuro cognitive performance by using the most advanced psycho-physiological measures. The participants of both chronotypes, morning and evening were classified and later subjected to cognitive testing by using the Cambridge Neuropsychological Test Automated Battery in the morning and the evening session under repeated measure design. The study revealed that performance on neuro cognitive functions; Planning and working memory, Decision-making and response control, and Motor skills get effected differently by their biological rhythm cycle and thus under performance in these functions can be attributed to maladaptation of biological rhythm termed as biological dysrhythmia. The study also highlights the role of this behavioural maladaptation in moderating operational efficiency of soldier in combat situation.

Author Biographies

Ravinder Yadav, DRDO Defence Institute of Psychological Research Delhi
Dr Ravinder Yadav, obtained his PhD (Psychology) from JNV University, Jodhpur. Presently working as Scientist ‘D’ at DRDO-Defence Institute of Psychological Research, Delhi. He is a trained cognitive drill therapist. He has experience of other classified R&D Projects and has published research papers in national and international journals of repute.
NP Singh, DRDO Defence Institute of Psychological Research Delhi
Mr N. P. Singh obtained MA and MPhil in Psychology from Guru Nanak Dev University, Amritsar, Punjab. Presently working as Scientist ‘G’ & Head of the Strategic Behaviour Division at DRDO-Defence Institute of Psychological Research, Delhi. He has more than 54 publications to his credit and has attended various national and International conferences. He has also been associated with various academic association like National Academy of Psychology, National Academy of Applied Psychology.
Published
2018-10-03
How to Cite
Yadav, R., & Singh, N. (2018). Effect of Biological Rhythm on Cognitive Performance. Defence Life Science Journal, 3(4), 326-333. https://doi.org/10.14429/dlsj.3.13411