Table 5 Mapping of articles on theory clusters and keywords.

From: Theoretical underpinnings and future research on academic stress in biological and educational perspectives

Cluster of theory

Keywords

Article (n)

Percentage

Neurocognitive stress and performance

Transactional theory

8

25.80

Attention bias theory

Execution focus model

Self-efficacy

Neurophysiology stress and performance

Brain activity

8

25.80

HPAA

Stress and epigenetic regulations

DNA methylation

2

6.45

BDNF

Genetic variations and stress

SNP Val66Met of BDNF gene

3

9.68

Math-related gene

Polygenic gene NPS and NPSR1

Total

21

67.74

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