In the present study, babies calming responses to two different cases of swinging stimuli (including mothers swung the babies in their arms, and mechanical/electric swinging), and sound stimuli (including brown noise), as well as 'no stimuli' case were assessed with behavioral and physiological indices. The 'brown noise' which was presented to the subjects was 70 dB (A-weighted sound pressure level). To carry out this study, 8 babies (two month old) were exposed to both swinging and sound stimuli, whether individually or simultaneously. The main results of this study revealed that each swinging stimuli and sound stimuli calmed crying babies down in compare with the 'no stimuli' case. The calming effect appeared within one minute after the stimulation. On the other hand, there were not multiplier effects when each baby was exposed to both swinging and sound stimuli at the same time. Overall, it can be said that both of swinging stimuli, and sound stimuli were effective ways to calm down two month old babies within one minute.
