Table 1.

Means, Standard Deviations, and Reliabilities of Variables*

Variables9th
(n = 249)
12th
(n = 324)
Student's tTest
df P
All
(n = 573)
Reliability
Days watched prime time, mean
(standard deviation)
3.7 (2.3)3.2 (2.2)571.0083.4 (2.3)
Days watched sports2.2 (2.2)1.7 (2.1)572.0201.9 (2.1)
Days watched TV news2.5 (2.1)2.7 (2.1)573.1682.6 (2.1)
Days watched day-soap.9 (1.8).4 (1.1)401.000.6 (1.5)
Days watched music videos3.9 (2.6)3.0 (2.6)572.0003.4 (2.6)
Days watched night talk2.0 (2.2)1.5 (1.9)493.0131.7 (2.1)
Days watched Spanish TV1.7 (2.4)1.2 (2.1)492.0231.4 (2.3)
Index: behavior12.6 (6.6)14.2 (7.1)448.01113.6 (7.0).87
Index: predrinking behavior2.3 (.8)2.0 (.7)486.0012.1 (.8).61
Index: desirability2.9 (.6)3.0 (.6)569.0072.9 (.6).74
Index: expectancies2.0 (.6)2.1 (.7)513.4192.0 (.7).89
Similarity: most teenagers drink3.1 (.8)3.2 (.8)532.0943.2 (.8)
Index: negative mediation: how often say2.7 (.6)2.6 (.7)567.3172.7 (.6).75
Index: positive mediation: how often say2.6 (.6)2.5 (.6)574.0242.5 (.6).73
Index: realism2.5 (.6)2.3 (.7)549.0022.4 (.7).79
Index: identification2.1 (.7)1.9 (.7)565.0032.0 (.7).81
Income3.0 (2.2)
Parental education2.9 (1.5)
Grade§1.6 (.5)
Gender1.5 (.5)
Age, mean (standard deviation), y16.3 (1.6)
  • * High score indicates an answer in agreement with the statement or a more frequent behavior.

  • Income: 0 = <$15 000; 1 = $15 001–34 999; 2 = $35 000–49 999; 3 = $50 000–79 999; and 4 = over $80 000.

  • Education: 1 = less than high school; 2 = high school graduate; 3 = some college; 4 = college graduate; and 5 = graduate work.

  • § 1 = 9th grade and 2 = 12th grade.