Teen evolution.It's it's 1. Contraction of it is. 2. Contraction of it has. See Usage Note at its. it's it is or it has it's be ~have hard to imagine, but your parents may have once have used the excuse, "The dog ate my homework." That's because they used to be teens, too. While homework, zits, and body image remain constant teen themes, many facets of adolescent ad·o·les·cent adj. Of, relating to, or undergoing adolescence. n. A young person who has undergone puberty but who has not reached full maturity; a teenager. life have morphed with the times. Check out some leading stats in the chart at right to discover some unexpected trends. For instance, drinking, smoking, and drug use are in decline since 1975, according to according to prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. a recent national survey by the University of Michigan (body, education) University of Michigan - A large cosmopolitan university in the Midwest USA. Over 50000 students are enrolled at the University of Michigan's three campuses. The students come from 50 states and over 100 foreign countries. . "I can't overemphasize o·ver·em·pha·size tr. & intr.v. o·ver·em·pha·sized, o·ver·em·pha·siz·ing, o·ver·em·pha·siz·es To place too much emphasis on or employ too much emphasis. how vital these developments are to the health and longevity longevity (lŏnjĕv`ĭtē), term denoting the length or duration of the life of an animal or plant, often used to indicate an unusually long life. of this generation," says Lloyd Johnston Johnston, town (1990 pop. 26,542), Providence co., N central R.I., a suburb of Providence; inc. 1759. Among its manufactures are jewelry, textiles, and fabricated metals. Johnston is the home of several insurance companies. , the study's lead researcher. Other trends, such as students' science smarts or average SAT scores, have remained static over the last three decades. Take an A-to-Z tour through teen life today in our first special double issue. It features classic adolescent topics--from loneliness to kissing--and current hot-button issues Noun 1. hot-button issue - an issue that elicits strong emotional reactions gut issue issue - an important question that is in dispute and must be settled; "the issue could be settled by requiring public education for everyone"; "politicians never discuss like heightened awareness on Attention Deficit Hyperactivity Disorder attention deficit hyperactivity disorder (ADHD), formerly called hyperkinesis or minimal brain dysfunction, a chronic, neurologically based syndrome characterized by any or all of three types of behavior: hyperactivity, distractibility, and impulsivity. , soaring soaring: see flight; glider. soaring or gliding Sport of flying a glider or sailplane. The craft is towed behind a powered airplane to an altitude of about 2,000 ft (600 m) and then released. use of the drug Ecstasy ecstasy, either of two drugs used for their euphoric effects. The original ecstasy, a so-called designer drug, also known as MDMA, is an analog of methamphetamine (see amphetamine). , stress overload See information overload and overloading. , and renewed interest in the ancient practice of yoga yoga (yō`gə) [Skt.,=union], general term for spiritual disciplines in Hinduism, Buddhism, and throughout S Asia that are directed toward attaining higher consciousness and liberation from ignorance, suffering, and rebirth. . We hope you enjoy it.
'70s '80s '90s Today
1970s 1980s
1 U.S. teen population (1970) (1980)
(ages 10 to 19) 30,888,000 39,410,000
2 Percentage of twelfth
graders who have used: (1975) (1985)
Cigarettes 74 69
Alcohol 90 90
Marijuana 47 54
3 New AIDS cases (1985)
(ages 13 to 19) n/a 32
4 Percentage of high-school (1970) (1980)
dropouts (ages 16 to 17) 12 12
4 Average SAT scores
Verbal 512 509
Math 498 500
5 Average science scores
for teens on National (1973) (1982)
Assessment for Progress 296 283
4 Number of teens (1975) (1980)
employed (ages 16 to 19) 7,104,000 6,581,000
Influential science (1978) (1987)
breakthrough First test-tube Prozac
baby born approved in
the U.S.
Influential tech (1975) (1983)
breakthrough First home Compact discs
computer debut
introduced
1990s 2000
1 U.S. teen population (1990) (2000)
(ages 10 to 19) 34,955,000 40,748,000
2 Percentage of twelfth
graders who have used: (1995) (2002)
Cigarettes 64 57
Alcohol 81 79
Marijuana 42 48
3 New AIDS cases (1995) (2001)
(ages 13 to 19) 377 162
4 Percentage of high-school (1990) (1999)
dropouts (ages 16 to 17) 10 9
4 Average SAT scores
Verbal 504 505
Math 506 514
5 Average science scores
for teens on National (1992) (1999)
Assessment for Progress 299 295
4 Number of teens (1995) (2000)
employed (ages 16 to 19) 6,419,000 7,276,000
Influential science (1996) (2001)
breakthrough Dolly: The Human
world's first genome
cloned animal mapped
Influential tech (1992) (2001)
breakthrough World Wide Segway
Web launched Scooter: Steers
on Internet by sensing body
movements
THINK: Examine the chart and choose one long- or short-term trend.
What social and cultural factors might help explain the change in
figures? For example, why do you think the number of teen smokers
has decreased since 1975?
CALCULATE: The number of new AIDS cases declined by what percentage
between the years 1995 and 2001?
GRAPH IT! Create a line graph using three data sets: the percentage
of twelfth graders using cigarettes, alcohol, and marijuana over
three decades. Plot each set separately on the same graph with the
percentage on the y-axis and the year on the x-axis.
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