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When my neighbor’s car is in the driveway, he always answers the door when I stop by to ask if he has some baking ingredients I am missing. If my neighbor’s wife’s car is in the driveway, when I knock on my neighbor’s door to ask for ingredients, she answers the door and lends me the ingredients about every third time. This is an example of a:

Which of the following demonstrates a strengthening effect on behavior? 

When Sorel goes fishing at the beach, he sometimes only casts his fishing line once, while other times, he casts it 30 times. On average, Sorel catches a fish after casting his fishing line 15 times. This is an example of a:         

When Cole asks for a high five from people standing in line at the bank, they do not give him one. When he is at a sports bar, Cole almost always gets a high five from people when he asks for one. The stimuli associated with the bank are examples of an:

During recess, the principal provides social attention contingent on their students completing approximately 15 minutes of independent play. During lunchtime, the principal provides social attention for every 10 minutes their students conduct independent eating. This is an example of a:

When Gigi has a heavy workload, she often gives some of her tasks to her coworker when the coworker offers to help. Because Gigi’s workload has lightened recently, with only one task left for her to complete, she does not give that task to her coworker. This is an example of an:

When Cole asks for a high five from people standing in line at the bank, they do not give him one. When he is at a sports bar, Cole almost always gets a high five from people when he asks for one. The stimuli associated with the bank are examples of an:

Approximately every 30 minutes, Juan and Arita quiz each other on a BCBA® study question and get a piece of chocolate if they answer it correctly. This is an example of a:

Which of the following is an example of a reinforcement?

Lilli will often ask her friends to play games when she’s done with homework. She never asks Cora, who rudely says, “No!” when Lilli asks. She also does not ask Cameron, as he is usually playing videogames and ignores her. Lilli also never asks her friends on Tuesdays when her cousins come over to play. Which of the following is functioning as an SΔ in this scenario?