Researchers suggest that infants usually have 20/20 vision by one year of age. What component of vision does this describe?

A. Students of mixed ages learning in the same classroom: Mixed-age grouping can support social learning but is not itself the defining feature of social constructivist pedagogy.
B. A teacher lecturing to students who take notes: This is teacher-centered instruction and contrasts with a social-constructivist emphasis on interaction and co-construction of knowledge.
C. Young children learning daily living skills: Practical skills can be learned socially, but this choice doesn’t capture the collaborative, peer-mediated learning central to social constructivism.
D. Peers helping each other learn: social constructivism (Vygotsky) emphasizes learning through social interaction, scaffolding, and peer collaboration.
E. Parents serving as temporary instructors: Parental instruction can be supportive but social constructivism specifically highlights collaborative peer and teacher-student interactions within the zone of proximal development.

A. Oral:Oral fixation (from problems in the oral stage) produces behaviors like overeating or nail-biting, not typically compulsive washing.
B. Anal:Freud linked compulsive, order/cleanliness-related behaviors to anal-stage conflicts (anal-retentive traits associated with obsessional behaviors).
C. Phallic:Phallic stage centers on Oedipal/Electra conflicts and identification, not ritualized cleanliness.
D. Latency:Latency is a relatively calm period of psychosexual development focused on social/skill learning, not the source of OCD traits.
E. Genital:Genital stage is mature sexuality in adolescence/adulthood, unrelated to early anal fixation explanations for compulsivity.