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Table 3 Prediction of personality traits based on the psychological variables (trait and state) assessed in this survey by means of machine learning (ML) algorithms

From: How do you feel during the COVID-19 pandemic? A survey using psychological and linguistic self-report measures, and machine learning to investigate mental health, subjective experience, personality, and behaviour during the COVID-19 pandemic among university students

Measure

x-Features and % of importance for classification of the y-feature

STAI-trait

18.86%

17.03%

13.99%

8.14%

6.46%

5.99%

5.41%

Extraversion

Neuroticism

STAI-State

Conscientiousness

Openness

Threat perception discrete emotions: neutral

Difficulties in social behaviour

Openness

28.68%

10.97%

9.28%

7.27%

6.51%

6.10%

 

Difficulties in emotion perception: identifying feelings

Worry about mental health

Conscientiousness

Agreeableness

Difficulties in social behaviour

Neuroticism

 

Conscientiousness

20.85%

15.57%

6.94%

5.49%

5.08%

5.05%

 

STAI-Trait

Openness

Depressive symptoms

Attention to bodily symptoms

Difficulties in emotion perception: describing feelings

Extraversion

 

Extraversion

28.74%

15.71%

8.57%

7.00%

5.11%

  

STAI-trait

Openness

Difficulties in social behaviour

Conscientiousness

Paying attention to bodily symptoms

  

Agreeableness

18.10%

8.48%

7.65%

7.13%

6.15%

4.73%

 

Threat perception

Perceived changes in valence (negative/unpleasant/positive/pleasant)

Neuroticism

Paying attention to bodily symptoms

Threat perception:

Discrete emotions: feeling sad

Age

Conscientiousness

 

Neuroticism

33.23%

21.94%

12.55%

8.25%

7.05%

4.64%

 

Threat perception: current anxiety (STAI state vs trait)

STAI-State

STAI-Trait

Difficulties in emotion perception: describing feelings

Perceived changes in eating behaviour

Difficulties in social behaviour

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