Adolescence in most undeveloped, agriculturally-based cultures typically begins when children enter:

Which of the following is believed to be the synaptic basis for learning and memory?

a. priming b. semantic encoding c. proactive interference d. long-term potentiation

Legibility of writing gradually increases as children

A) use larger, more uniform lettering. B) produce more accurate letters with uniform height and spacing. C) learn to make strokes with their entire arm. D) learn to accurately integrate two-dimensional shapes.