The science behind the app.

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Ap Dijksterhuis, Ad van Knippenberg, and Rob W. Holland (2014). Evaluating Behavior Priming Research: Three Observations and a Recommendation. Social Cognition: Vol. 32, Understanding Priming Effects in Social Psychology, pp. 196-208.

Bargh, J. A., Chen, M., Burrows, L. (1996). Automaticity of social behavior: Direct effects of trait construct and stereotype activation on action. Journal of Personality and Social Psychology, 71, 230–244.

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Lang, P. J., Greenwald, M. K., Bradley, M. M., & Hamm, A. O. (1993). Looking at pictures: Affective, facial, visceral, and behavioral reactions. Psychophysiology, 30, 261–273.

Avero, P., & Calvo, M. (2006). Affective Priming with Pictures of Emotional Scenes: The Role of Perceptual Similarity and Category Relatedness. The Spanish Journal of Psychology, 9(1), 10-18.