Answer:
The answer is social clock.
Explanation:
This phenomenon explains the expectancy of society to achieve certain things at a determined time (for example, graduating from high school at age eighteen or getting married in your twenties). However, these expectations are variable in different parts of the world.
Bernice Neugarten proposed the idea in order to explain the aging process. She stated that events in people's lives occur in a predictable manner.
Cultural socialization is the manner in which parents address specific racial and ethnic issues within the family. Cultural socialization also refers to the way parents communicate cultural values, beliefs, customs, and norms. It also refers to how the child takes in these values and beliefs.
If he used a repeated -measures design then there would be 30 subjects in the research studies.