Deirdre used to be shy and unwilling to speak out in class. Last semester, she was in a class that involved a lot of discussion groups, and she found that her classmates were willing to listen attentively to her ideas and often asked her for input when the discussion bogged down. Now Deirdre is more outspoken and confident during class discussions. Based on principles of conditioning, Deirdre's new outspoken, confident manner is MOST likely a result of

Dr. redbull conducts a study to determine whether her new energy drink children perform better on spelling tests. she randomly assigns children to one of two groups: group 1 receives her energy drink and group 2 receives water. she then gives both groups a spelling test and compares the results. which of the following is true about this study? a. group 1 is the dependent variable and group 2 is the independent variable. b. this is a correlational study. c. group 2 is the experimental group. d. the independent variable is the type of drink the children receive.