Farmer, J <br/><br/>
Varying temporal placement of an added stimulus in a fixed-interval schedule.  [electronic resource] 

 -  Journal of the experimental analysis of behavior  Jul 1966 
 - 369-75 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-5002 
<br/><br/><label>Standard No.: </label>10.1901/jeab.1966.9-369  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Birds<br/>Conditioning, Operant<br/>Conditioning, Psychological<br/>Female<br/>Reinforcement, Psychology