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Table 1 Description of handwriting tasks and features

From: Major depressive disorder recognition based on electronic handwriting recorded in psychological tasks

Tasks/variables

Description

Task 1

Name writing task

Task 2 − 5

Number-related tasks

Task 6 − 8

Vocabulary transcription tasks

Task 9 − 11

Negative question and answer tasks

Task 12 − 14

Neutral question and answer tasks

Task 15 − 17

Positive question and answer tasks

Task 18 − 21

Picture description tasks

Handwriting features

x coordinate, y coordinate, speed, pressure, tilt of the x-axis, and tilt of the y-axis

Basic statistical values

The sum value of all data points, the number of data points, mean, median, upper quartile, lower quartile, maximum, minimum, extreme deviation, interquartile range, standard deviation, variance, and coefficient of discretion

  1. Six handwriting features were recorded for each task, and 13 basic statistical values were computed for each handwriting feature. This resulted in 6 × 13 = 78 parameters for each task. Details of the 21 tasks are provided in Additional File 1