Table 2.
Phase IV Pilot Test, Reliability Analysis for Theoretical Correlates and Behavior (N = 39 students)
| Variables | Time 1 Internal Consistency Reliabilitya |
Time 2 Internal Consistency Reliabilitya |
Stability Reliabilityb |
|---|---|---|---|
| Intrapersonal Stream | |||
| Ultimate Underlying Causes | |||
| Inattention (composite)c | α = 0.81 | α = 0.81 | r = 0.89 |
| Hyperactivity (composite)c | α = 0.51 | α = 0.68 | r = 0.76 |
| Sensation-Seeking (composite)c | α = 0.72 | α = 0.86 | r = 0.83 |
| Gender | NA | NA | r = 1.00 |
| Race/Ethnicity | NA | NA | r = 0.95 |
| Age, in years | NA | NA | r = 1.00 |
| Year in School | NA | NA | NA |
| International Student Status | NA | NA | NA |
| Enrollment Status, in credit hours | NA | NA | r = 0.87 |
| Distal Predisposing Influences | |||
| Psychological Distress (composite)d | α = 0.82 | α = 0.86 | r = 0.73 |
| Academic Concern (composite)d | α = 0.77 | α = 0.83 | r = 0.65 |
| Grades | NA | NA | r = 0.88 |
| ADHD Diagnosis | NA | NA | Tetrachoric rho = 1.00 |
| Proximal Immediate Predictors | |||
| Avoidance Self-Efficacy (composite)e | α = 0.89 | α = 0.92 | r = 0.95 |
| Social Situation/Context | |||
| Ultimate Underlying Causes | |||
| Housing | NA | NA | r = 0.98 |
| Distal Predisposing Influences | |||
| Greek Life Participation | NA | NA | Tetrachoric rho = 1.00 |
| Varsity Sports Participation | NA | NA | Tetrachoric rho = 1.00 |
| Relationship Status | NA | NA | r = 0.98 |
| Strength of Relationshipsf | |||
| Friends | NA | NA | r = 0.74 |
| Family | NA | NA | r = 0.83 |
| Campus Faculty and Staff | NA | NA | r = 0.78 |
| Perceptions of IUPS by Socializing Agentsg | |||
| Friends | NA | NA | r = 0.79 |
| Family | NA | NA | r = 0.68 |
| Campus Faculty and Staff | NA | NA | r = 0.50 |
| Endorsement of IUPS by Socializing Agentsh | |||
| Friends | NA | NA | r = 0.68 |
| Family | NA | NA | r = 0.80 |
| Campus Faculty and Staff | NA | NA | NA |
| Proximal Immediate Predictors | |||
| Perception of Prevalence | |||
| Use by close friends, in percent | NA | NA | r = 0.91 |
| Use by student population, in percent | NA | NA | r = 0.79 |
| Sociocultural Environment | |||
| Ultimate Underlying Causes | |||
| Financial-Related Stressd | NA | NA | r = 0.86 |
| Participation in Religious Activitiesd | α = 0.97 | α = 0.98 | r = 0.99 |
| Exposure to Prescription Drug Mediac | r = 0.81 | r = 0.78 | |
| Television | r = 0.73 | ||
| Print media | r = 0.78 | ||
| Campus Culture #1c | r = 0.27 | r = 0.10 | |
| Courses academically demanding | r = 0.66 | ||
| Students compete for best grades | r = 0.73 | ||
| Campus Culture #2c | NA | NA | r = 0.40 |
| Perception of Health Center Personnelc | NA | NA | r = 0.64 |
| Distal Predisposing Influences | |||
| Interactions with Social Institutionsc | NA | NA | r = 0.72 |
| Interactions with Social Institutions Influencing Valuesc | NA | NA | r = 0.70 |
| Informationc | NA | NA | r = 0.50 |
| Information Influencing Knowledgec | NA | NA | r = 0.51 |
| IUPS Expectancies-Positivei | α = 0.79 | α = 0.83 | r = 0.56 |
| IUPS Expectancies-Negativei | α = 0.79 | α = 0.91 | r = 0.55 |
| Proximal Immediate Predictors | |||
| Knowledge about Prescription Stimulantsc | α = 0.85 | α = 0.87 | r = 0.81 |
| Costs/Benefits of IUPSc | α = 0.63 | α = 0.58 | r = 0.75 |
| Immediate Precursors | |||
| Intentions to Engage in IUPSi | NA | NA | r = 0.90 |
| Behavior | |||
| IUPS (Ever Use During College) | NA | NA | Tetrachoric rho = 1.00 |
| IUPS Frequencyj | NA | NA | r = 0.95 |
Cronbach alpha or Pearson’s r used for internal consistency
Pearson’s r or tetrachoric rho used for stability reliability
Response options for items and composite range from 1 = Strongly Disagree to 5 = Strongly Agree
Response options for items and composite range from 1 = None of the time to 5 = All of the time
Response options for items and composite range from 1 = Not at all confident to 5 = Completely confident
Response options for items range from 1 = Very Weak to 5 = Very strong
Response options for items range from 1 = Very Negatively to 5 = Very Positively
Response options range from 1 = None to 5 = All
Response options range from 1 = Very Unlikely to 4 = Very Likely
Response options range from 1 = Never to 7 = 40 or more times
NA: Not Applicable