Self-determination theory, illustrating basic psychological needs, defining features of the types of motivation and position in the relative autonomy continuum (adapted from Ryan and Deci, 2007).

  Part of: Tiago P, Gouveia MJ, Capinha C, Santos-Reis M, Pereira HM (2017) The influence of motivational factors on the frequency of participation in citizen science activities. Nature Conservation 18: 61-78.