A researcher used a measure of self-esteem that has a mean of 50 and a standard deviation of 10 . If 1000 respondents completed the scale, how many would she expect to score between 40 and 60

Your little sister enjoys taking time out of her day to make bead necklaces. A birthday party is coming up, and you decide you want to give a necklace to each person at the party

She offers to make a necklace for each of your friends, but for added motivation you give her a dollar for each one she makes. Which of the following is most likely to happen? a. After the party, your sister will enjoy making beads more than she did before because you gave her a reward. b. After the party, your sister will enjoy making beads less than she did before because you rewarded her for something she already liked to do. c. Because your sister already enjoys making beads, paying her for making them will have no effect on how much she enjoys the activity. d. Paying your sister for making the beads will increase her self-awareness.

In lower mammals, the release of the female sex hormone into the bloodstream, makes the female receptive to having sex with this period being referred to as

a. mensis. b. estrus. c. menopause. d. androgyny.