In one investigation, __________, appearing an average of four years in advance of death, predicted mortality

The lower limit of Vygotsky's zone of proximal development is determined by a child's competence when solving the problem alone

Indicate whether the statement is true or false

Habits that lead to a failure to identify important elements of a problem are referred to as which type of barrier to problem-solving?

a. emotional b. cultural c. perceptual d. learned