Question 1
Marcus wears himself out trying to out-compete his older brother, who is a talented athlete. Marcus's behavior is best understood as an example of:
◦ sibling rivalry
◦ imprinting
◦ synchrony
◦ the discrepancy hypothesis
Question 2
Molly and her infant son often engage each other in a "love-stare" in which each looks and smiles at the other for extended periods of time. The word that best describes this back-and-forth relationship would be:
◦ social referencing
◦ synchrony
◦ imprinting