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118Chapter 6Figure 3. Stimuli and stimulus progression.whether they were interested in their partner, and crucially, their responsesremained relatively consistent throughout the speed date (Prochazkova etal., 2022). The original videos (i.e., with background) were displayed. Toexamine the effect of synchrony on the detection of romantic interest, wemanipulated the presentation of interactions in the couples (i.e., Shuffledcondition). Specifically, half of the couples (n = 8) were not shuffled andwere presented as collected (henceforth known as real interaction). In contrast, the rest of the videos were randomly shuffled and presented to createfake interactions that actually never took place (e.g., see Figure 3: beardedman dated the woman wearing her hair down but was presented in the Shuffled condition next to the woman wearing her hair in a ponytail). This factorwas implemented as a control to ensure that it is specific cues of the person not necessarily the interaction between the couple that influenced theparticipants’ response.ProcedureParticipants were asked to provide informed consent. Next, they were seatedin front of a computer monitor (25-inch, 1680 ⇥1050 resolution; 60 Hz refresh rate). Participants filled in their answers for each trial in a paperquestionnaire. The task consisted of 16 trials and lasted approximately 5min. After the end of the task, participants were debriefed and thanked fortheir participation.Iliana Samara 17x24.indd 118 08-04-2024 16:36