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The Hot Air Blast (HAB) procedure has been used successfully as a punishing event. However, HAB is a compound stimulus with multiple potentially aversive dimensions (sound, air pressure, heat generated directly by the stimulus, and the heat produced in the experimental environment) and it is not yet known which is critical as a punisher. Furthermore, previous studies used a single intensity of stimulus. The present study had two main objectives: to identify the properties of HAB that function as a punisher (Experiment 1) and intensities at which it would be effective (Experiment 2). In Experiment 1, nine rats, divided into three groups, were exposed to different dimensions of HAB: Sound Group, Sound + Pressure Group and Sound + Pressure + Hot Group. The results indicated that the suppression of operant responding occurred only when the dimension Hot was included with Sound + Pressure. In Experiment 2, nine rats, divided into three groups, were exposed to three different intensities of the composite HAB stimulus: Null Intensity Group, Minimum Intensity Group and Maximum Intensity Group. Only the maximum intensity produced consistent high levels of response suppression. Key words: Hot Air Blast, aversive control, punishment, rats.

EFEITOS DA PUNIÇÃO DE UMA CLASSE DE RESPOSTAS USANDO DIFERENTES DIMENSÕES E INTENSIDADES DO JATO DE AR QUENTE