Campbell, B A <br/><br/>
Interaction of adversive stimuli: summation or inhibition?  [electronic resource] 

 -  Journal of experimental psychology  Oct 1968 
 - 181-90 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-1015 
<br/><br/><label>Standard No.: </label>10.1037/h0026363  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Avoidance Learning<br/>Electroshock<br/>Male<br/>Motivation<br/>Noise<br/>Rats<br/>Reinforcement, Psychology