Human development is studied from a scientific perspective, meaning that its methods of study are:

Anat and Cyril have just become parents. Statistically speaking, this couple is apt to:

a) become happier. b) argue less. c) adopt less defined gender roles. d) become less intimate and passionate.

When do pregnant women generally begin to feel fetal movement?

A) One month after conception B) Two months after conception C) Three months after conception D) Four months after conception