The aim of the present study was to investigate whether attention plays an important role in emotional devaluation through response inhibition. In addition, another aim was to clarify whether the devaluation through response inhibition reflected a decreased preference for no-go stimuli or an increased preference for go stimuli. To this end, we assessed the effect of response inhibition in a go/no-go task on subsequent rating of preference for the pictures presented. In Experiment 1, participants made a go or no-go response depending on the category of picture stimuli, which was preceded and followed by a preference rating task for the picture presented in the go/no-go task. The results showed that, in the second rating, no-go stimuli (i.e., previously rejected stimuli) were rated less positively than go-stimuli (i.e., previously accepted stimuli). This finding is consistent with those of previous studies that demonstrated that response inhibition results in the emotional devaluation of the no-go stimuli (Kiss et al., 2008; Doallo et al., 2012). The results of Experiment 1 were replicated in Experiment 2, where the task difficulty of the go/no-go task was increased by reducing the reaction time deadline. In contrast to Experiments 1 and 2, Experiment 3 revealed that such a decrease from response inhibition was not obtained when the participants made a go/no-go response depending on the category of a digit superimposed on a depiction of the stimulus. In summary, we found that different ratings between the go and no-go stimuli occurred only when the participants attended to the picture stimuli in the go/no-go task.