Response-response (R-R) compatibility effects are the changes in reaction time (RT) for one response based on its pairing with another response. R-R compatibility effects are typically found when both responses are speeded. Other research has shown that RTs to an initial task increase when participants are required to complete a second task, regardless if the second task is speeded or non-speeded. The present study was designed to examine the R-R compatibility effect for the non-speeded task conditions. Specifically, RTs were examined for conditions in which initial task was either a finger lift or a finger press. It was anticipated that the least compatible pairing of responses would produce the larger increase in RT, consistent with the notion of R-R compatibility. Participants completed four conditions. Each condition was presented in a block of 20 trials. One condition (Lift – No Move) required the participants to lift the right-index finger from the response key as quickly as possible upon the presentation of an auditory stimulus. A second condition (Press – No Move) required the participants to press the response key with the right-index finger as quickly as possible upon the presentation of an auditory stimulus. A third condition (Lift – Move) required the participant to perform the finger-lift task followed by 2-second delay and then a reach to an object positioned at the participant's midline. The fourth condition (Press – Move) required the participant to perform the finger-press task followed by 2-second delay, and then a reach for the object. The conditions were randomized across the participants. The mean reaction times were analyzed using a 2 (Press vs. Lift) X 2 (No Move vs. Move) repeated measures ANOVA. The results indicated the RTs for the finger-press tasks were significantly faster than those for the finger-lift tasks. Additionally, as expected the Move tasks resulted in significantly slower RTs than the No Move tasks. The results are consistent with previous findings that requiring a non-speeded second task increases the RTs. An R-R compatibility effect was evident because there was a greater effect on the RT for the finger-lift response than for the finger-press response. For the finger-lift task, the participants may have to terminate one movement (pressing the key down) prior to initiating the finger lift. Additional research is warranted that clearly identifies the locus of the R-R compatibility effect associated with the performance of the non-speeded second task.Keyword(s): performance, research