Pressure at Play: Measuring Player Approach and Avoidance Behaviour through the Keyboard

This study investigates whether the force with which players press keyboard keys can serve as a real-time, behavioural indicator of their experience during fast-paced action games. Building on prior work linking interface pressure to arousal, frustration, and difficulty, the authors hypothesise that avoidance actions will generate greater keyboard pressure than approach actions, and that this difference may reflect the player's emotional state moment to moment. The research positions keyboard pressure as a phasic measure tied directly to in-game behaviour, offering a complement to questionnaires and physiological sensors.

The empirical work involved 19 participants playing four fast-paced games: two first-person shooters and two racing titles. Force sensors beneath the keyboard recorded keystroke pressure, which was range-corrected for comparability across individuals. Results showed that backward inputs, treated as avoidance or braking actions, were pressed significantly more forcefully than forward, approach inputs. Moreover, the forward-backward pressure difference correlated positively with self-reported arousal, and game genre showed a marginal effect. The authors interpret avoidance keystrokes as carrying a heightened intensity that may signal arousal at a micro-level.

The findings are qualified by important limitations. The classification of forward inputs as approach and backward inputs as avoidance is an assumption rather than a directly verified psychological state, and the sample of 19 participants is small, limiting generalisability. The study's geographic and demographic scope is not specified, and it covers a single session of gameplay across a narrow set of genres. Nonetheless, the work contributes a novel, low-cost method for capturing embodied player responses, situated within a broader literature on bodily expression, posture, and adaptive game design.