In the classic research conducted by McGraw on Johnny and Jimmy, the more deprived twin Jimmy was found to be which of the following?

• A. More dependent on their mother than Johnny
• B. More social
• C. Happy and well-adjusted
• D. Less prone to temper tantrums

Answer: (A)

In the study conducted by McGraw, the findings revealed that Jimmy, the more deprived twin, exhibited greater dependence on their mother compared to Johnny. This outcome was attributed to the environmental conditions and developmental experiences each twin faced. Johnny, who received more stimulation and opportunities for movement and exploration, was able to develop more independence and self-sufficiency. Conversely, Jimmy's limited experiences and social interactions contributed to his reliance on their mother for comfort and support. This illustrates the significant impact that environmental factors and early experiences have on motor development and social behavior in children, highlighting the importance of adequate stimulation and nurturing during critical developmental periods.