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Since the original Freedman and Fraser studies were published, a great amount of research using the foot-in-the-door tactic has revealed its effectiveness. Nevertheless, the effect sizes reported in meta-analysis studies tend to be low and the effect size obtained by Freedman and Fraser in their studies has never been obtained again. We conducted a direct replication of the original foot-in-the-door experiment in two time intervals and in two countries. The results indicate a drop of compliance over time. The results reveal that, while in 2003 the foot-in-the-door strategy was effective in Ukraine and ineffective in Poland, in 2013, the effect was insignificant in both Ukraine and Poland. The results are explained by high ecological validity of the foot-in-the-door procedure.

The foot-in-the-door effect is considered more effective when a time lapse occurs between performing an initial, smaller request and being asked a second request. It has been hypothesized that mindfulness moderates the effectiveness of two versions of the strategy - time-delay and no-delay foot-in-the-door. The greater magnitude of time-delay foot-in-the-door is considered to be connected with increased mindfulness. The aim of this study was to verify the assumption concerning mindfulness as a state triggering time-delay foot-in-the-door. In a field experiment ( N = 249), we manipulated the time lapse and kind of reason (real, placebic, and no reason) accompanying a difficult or less difficult target request. This extended Langer et al. replication indicates that time-delay foot-in-the-door is indeed greater after mindfulness activation.