What is the median age of marriage for women in most developed countries today?

Which animal has been using a form of stimulus control known as targeting?

a) a dolphin that touches a stick with its snout b) A parrot that mimics human speech c) a dog that stops barking on demand d) a sea lion that waves its flipper at an audience

What is the name for the inability to remember life events from before the ages of two to four?

a. memory development b. infantile amnesia c. childhood forgetting d. retrograde interference