46
A five - phase experiment was designed to investigate ( a ) whether contingent music - listening would act as a reinforcer to increase arithmetic performance of EMR children and ( b ) whether this contingent reinforcement would affect preference for that reinforcer .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None