Josie's best friend started making fun of her clothes at school. Now when Josie sees her best friend, she feels anxious. In this example, her concern about being made fun of is a(n) _____ response

Describe laboratory, field, and natural, or quasi-, experiments. Explain the strengths and limitations of each

What will be an ideal response?

Of the following events in boys' puberty, which typically occurs earliest?

A) Growth of the genitals B) Peak of the growth spurt C) Growth of a beard D) Lowering of the voice