Final answer:
Petra is utilizing modeling, punishment, and token economy as behavior modification techniques to develop Mohammed's social skills. She demonstrates appropriate social interactions, removes privileges for poor behavior, and provides tickets as positive reinforcement that can be redeemed for toys.
Step-by-step explanation:
Behavior modification is a technique used to increase or decrease specific behaviors through reinforcement and punishment. In the scenario provided, Petra employs different behavioral techniques to aid in the social development of 5-year-old Mohammed.
Modeling is demonstrated when Petra introduces herself to Lily, maintaining eye contact and a handshake, and greets her politely. This technique allows Mohammed to observe and learn positive social interactions directly.
Punishment, specifically negative punishment, is used when Petra subtracts 5 minutes of free time from Mohammed after he screams and throws a fit. The removal of a desirable outcome discourages the unwanted behavior.
Token Economy is a form of positive reinforcement where Mohammed receives a ticket for exhibiting good manners, like saying "please" and "thank you" while maintaining eye contact. These tokens can ultimately be exchanged for a toy, encouraging the repetition of the good behavior.