Question 1

According to research cited in the text, about what percent of U. S. adolescents girls do NOT use contraception at first intercourse?

Accepted Answer

According to research cited in the text, about 22% of U.S. adolescent girls do not use contraception at first intercourse.

Question 2

According to research cited in the text, about what percent of U. S. adolescents boys do NOT use contraception at first intercourse?

Accepted Answer

Research indicates that approximately 15% of U.S. adolescent boys do not use contraception at first intercourse.

Question 3

Which of the following 16-year-old girls is most likely to have had a baby?

Accepted Answer

Studies have shown that African American teenagers have higher rates of teen pregnancy compared to other racial and ethnic groups in the United States.

Question 4

According to the text, about what percent of sexually active teenagers in the United States today have a sexually transmitted disease?

Accepted Answer

According to the text, "about one in four sexually active teenagers" have a sexually transmitted disease. This equates to approximately 25%, which is closest to option B - 20%.

Question 5

In comparison to sexual activity patterns and pregnancy rates in Europe, teenagers in the United States are _______ likely to be sexually active and _______ likely to become pregnant:

Accepted Answer

Teenagers in the United States are equally likely to be sexually active compared to their European counterparts but are more likely to become pregnant. This difference in pregnancy rates is often attributed to varying levels of access to contraception and sexual education.

Question 6

Suppose you conduct a survey of 9th and 12th grade boys and girls. If the students in your survey respond in the same way as did students in 2009, you would expect that, in comparison to girls, boys in 9th grade reported ______ levels of sexual activity and boys in 12th grade reported _____ levels of sexual activity.

Accepted Answer

According to the text, in 2009, 29% of female and 34% of male 9th graders reported being sexually active. However, this gender difference had reversed by 12th grade, with 65% of females and 60% of males reporting sexual activity.

Question 7

In comparison to teenage pregnancy rates in the U. S. in 1990, rates in 2010 were:

Accepted Answer

The rate of teen pregnancy and teen childbirth in the United States has been falling sharply during the 1990s.

Question 8

Mark is a typical high school student who is sexually active. If he and nine of his best high school friends are tested for sexually transmitted diseases, he should assume of that of these 10 young men, ___ will have positive test results.

Accepted Answer

The text reports a statistic that about 20% of sexually active adolescents have an STD. If Mark and his friends are typical, then 2 of the 10 of them would test positive.

Question 9

If you were to conduct a study of a "typical" high school in the United States today, you should expect that about _____ of the students would have been tested for AIDS.

Accepted Answer

The text reports that 12.9% of U.S. high school students were tested for AIDS in 2011.

Question 10

Suppose you conduct a survey of 100 teenage boys, asking them whether or not they used contraception at their first experience of sexual intercourse. If this group was typical, you should expect that about ____ of these boys report that they DID use contraception.

Accepted Answer

According to research cited in the text, about 15% of adolescent boys do not use contraception at first intercourse. This leaves about 85% of adolescent boys who do use contraception at first intercourse.

Question 11

According to the text, more U.S. adolescent girls become pregnant than adolescent girls from Western European countries because U.S. adolescent girls:

Accepted Answer

The text states that U.S. adolescent girls are less likely to use contraception, which is a key factor in preventing unwanted pregnancies.

Question 12

Suppose you study a group of 100 pregnant teenagers in the U. S. today. If this group is typical, you would expect about ___ to have their baby, about ___ to have an abortion, and about ___ to have a miscarriage.

Accepted Answer

According to the text, about one-half of pregnant teens give birth; and about 20% of those pregnancies are believed to be lost through miscarriage and another 26% through abortion.

Question 13

According to the text, the teenage pregnancy rate in Japan and Korea is about ____, whereas the teenage pregnancy rate in sub-Saharan Africa is about ____.

Accepted Answer

The teenage pregnancy rate in Japan and Korea is significantly lower (about 1%) compared to sub-Saharan Africa, where the rate is much higher (about 50%).

Question 14

According to research presented in the text, about ____ of adolescent girls report that their first experience of sexual intercourse was the result of either rape or was "unwanted"?

Accepted Answer

The text reports that 7% of adolescent girls report that their first experience with sexual intercourse was the result of rape and that another 11% report their first experience as voluntary but "unwanted."

Question 15

According to the text, adolescent boys and girls from two-parent families have ____________ sexual experience, compared to children from single-parent homes.

Accepted Answer

According to research cited in the text, adolescent boys and girls from two-parent families have less and later sexual experience than those from single-parent families.

Question 16

About what percent of teenage girls in the U. S. become pregnant?

Accepted Answer

As of the most recent data, about 8% of teenage girls in the U.S. become pregnant. This figure has been declining over the years due to increased education and access to contraceptives.

Question 17

Today in the U.S., about % of male high school seniors and % of female high school seniors report being sexually active.

Accepted Answer

The answer of Today in the U.S., about % of...

Question 18

According to data cited in the text, in which of the following regions of the world is teen parenting LEAST common?

Accepted Answer

The text states that Japan has one of the lowest rates of teen parenting in the world.

Question 19

Suppose you conduct a survey of 100 teenage girls, asking them whether or not they used contraception at their first experience of sexual intercourse. If this group was typical, you should expect that about ____ of these girls report that they DID use contraception.

Accepted Answer

According to research cited in the text, about 22% of adolescent girls and 15% of adolescent boys do NOT use contraception at first intercourse.

Question 20

Generalizing from data presented in the text, which of the following high school students would be LEAST likely to report having had sexual intercourse?

Accepted Answer

The text mentions that white students were less likely than African American or Hispanic students to report ever having had sexual intercourse. Therefore, Lee, a white boy, would be least likely to report having had sexual intercourse.

Quiz 10: Adolescence and Emerging Adulthood: Physical and Cognitive Development