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Intervention Summary

LifeSkills Training (LST)

LifeSkills Training (LST) is a school-based program that aims to prevent alcohol, tobacco, and marijuana use and violence by targeting the major social and psychological factors that promote the initiation of substance use and other risky behaviors. LST is based on both the social influence and competence enhancement models of prevention. Consistent with this theoretical framework, LST addresses multiple risk and protective factors and teaches personal and social skills that build resilience and help youth navigate developmental tasks, including the skills necessary to understand and resist prodrug influences. LST is designed to provide information relevant to the important life transitions that adolescents and young teens face, using culturally sensitive and developmentally and age-appropriate language and content. Facilitated discussion, structured small group activities, and role-playing scenarios are used to stimulate participation and promote the acquisition of skills. Separate LST programs are offered for elementary school (grades 3-6), middle school (grades 6-9), and high school (grades 9-12); the research studies and outcomes reviewed for this summary involved middle school students.

Descriptive Information

Areas of Interest Substance use disorder prevention
Outcomes
1: Substance use (alcohol, tobacco, inhalants, marijuana, and polydrug)
2: Normative beliefs about substance use and substance use refusal skills
3: Violence and delinquency
Outcome Categories Alcohol
Crime/delinquency
Drugs
Tobacco
Physical aggression and violence-related behavior
Ages 13-17 (Adolescent)
Genders Male
Female
Races/Ethnicities American Indian or Alaska Native
Asian
Black or African American
Hispanic or Latino
White
Race/ethnicity unspecified
Settings School
Geographic Locations Urban
Suburban
Rural and/or frontier
Implementation History An estimated 50,000 teachers, 10,000 schools/sites, and 3 million students have participated in the program. The duration of implementation varies; some sites have implemented LST for 5 years or longer. LST has been extensively evaluated in more than 30 scientific studies involving more than 330 schools/sites and 26,000 students in suburban, urban, and rural settings. Most of these studies were conducted by Dr. Gil Botvin and colleagues at Weill Medical College of Cornell University. To date, at least seven independent evaluation studies have been conducted by external research groups.

LST has been used with youth in all 50 States, the District of Columbia, Puerto Rico, and the Virgin Islands. Outside the United States, it has been used in 32 countries including Australia, Canada, Croatia, Denmark, England, France, Germany, Greece, Honduras, Hong Kong, Ireland, Italy, Japan, Kenya, Malaysia, Mexico, New Zealand, Nicaragua, Norway, Panama, Portugal, Qatar, Russia, Saudi Arabia, South Africa, South Korea, Spain, Sweden, Taiwan, Thailand, Turkey, and Venezuela.
NIH Funding/CER Studies Partially/fully funded by National Institutes of Health: Yes
Evaluated in comparative effectiveness research studies: Yes
Adaptations LST curriculum materials are available in Spanish.
Adverse Effects No adverse effects, concerns, or unintended consequences were identified by the developer.
IOM Prevention Categories Universal

Quality of Research

Documents Reviewed

The documents below were reviewed for Quality of Research. The research point of contact can provide information regarding the studies reviewed and the availability of additional materials, including those from more recent studies that may have been conducted.

Outcomes

Outcome 1: Substance use (alcohol, tobacco, inhalants, marijuana, and polydrug)
Description of Measures Substance use (alcohol, cigarettes, inhalants, and marijuana) was assessed using self-report items from the LifeSkills Training questionnaire. Students were asked about the frequency and amount of substance use. Lifetime smoking, drinking, and marijuana use were assessed with items that asked if the respondent had ever used the substances (yes or no). Frequency of smoking, drinking, and marijuana use was assessed on a scale with responses ranging from "never" to "more than once a day." The amount of cigarette smoking was assessed on a scale with responses ranging from "never" to "more than a pack a day," and the amount of alcohol use was assessed on a scale with responses ranging from "don't drink" to "more than 6 drinks" per occasion. Frequency of getting drunk was assessed on a scale with responses ranging from "don't drink" to "more than once a day."

In addition, a substance use initiation scale/index was constructed by combining three dichotomous items regarding the use of tobacco, alcohol, and marijuana. Students were asked if they had ever "smoked a cigarette," "had a drink of alcohol," or "smoked marijuana." Responses were coded 0 for no and 1 for yes and summed. For each wave of data, responses were corrected for consistency, so that if an individual answered "yes" at any point in time, the subsequent response to the same question was also coded "yes."
Key Findings In one study, junior high schools were assigned to one of three conditions: LST with annual provider training workshops and ongoing consultation, LST with videotaped training and no consultation, or a usual care control group. Follow-up data were collected 6 years after the intervention. This study found a significant decrease in cigarette smoking, alcohol use (drunkenness), and polydrug use (concurrent tobacco, alcohol, and marijuana use) at follow-up for the two groups of students who received LST (all p values < .05). The strongest intervention effects were observed among students exposed to at least 60% of the LST program (operationally defined as the "fidelity sample"). At follow-up, the LST fidelity sample had significantly lower rates than controls on nearly every measure of tobacco, alcohol, marijuana, and polydrug use (all p values < .05).

In another study, middle school students receiving LST were compared with a control group of students who received a program that was normally in place in New York City schools. Results at posttest and 1-year follow-up indicated that students who received LST reported less smoking, less alcohol use, less inhalant use, and less polydrug use relative to those in the control group (p values ranging from < .001 to < .05). The LST group had a 50% smaller proportion of binge drinkers relative to the control group at both the 1- and 2-year follow-up assessments (p < .05 and p < .01, respectively). In addition, among a subsample of youth at high risk for substance use initiation (participants with poor grades and friends who engage in substance use), those who received LST were found to engage in less smoking (p < .01), less drinking (p < .01), less inhalant use (p < .05), and less polydrug use (p < .01) compared with similarly matched controls who did not receive the intervention.

In a third study, 7th-grade students who received LST had a significantly slower rate of increase in substance initiation (tobacco, alcohol, and marijuana) from pretest to posttest and 1-year follow-up compared with students from a minimal contact control condition (p < .01). Five and a half years past baseline (i.e., when the participants were in 12th grade), LST participants reported significantly lower scores on the overall substance use initiation index (p < .01) as well as less cigarette use initiation (p < .05) and less marijuana use initiation (p < .05) relative to controls. When growth over time was examined in the higher risk subsample, the LST group had slower increases in the rates of frequency of marijuana use (p < .01) and monthly and advanced polydrug use (all p values < .01) compared with the control group.
Studies Measuring Outcome Study 1, Study 2, Study 3
Study Designs Experimental
Quality of Research Rating 3.9 (0.0-4.0 scale)
Outcome 2: Normative beliefs about substance use and substance use refusal skills
Description of Measures Normative beliefs about substance use and substance use refusal skills were assessed using self-report items from the LifeSkills Training Questionnaire. For normative beliefs, students were asked about the perceived prevalence of drug use among peers and adults, with separate items for specific substances (cigarettes, beer/wine, marijuana, cocaine or other "hard" drugs, and inhalants). Responses were on a 5-point scale ranging from 1 (none) to 5 (all or almost all).

For refusal skills, 10 items from the questionnaire were used. Five items adapted from the Gambrill-Richey Assertion Inventory assessed refusal intentions; students were asked how likely they would be to say no if someone asked them to try a specific substance (tobacco, alcohol, marijuana, inhalants, and cocaine/other drugs). Another five items assessed students' anticipated likelihood of using various refusal strategies (e.g., "tell them not now," "change the subject," "make up an excuse and leave"). For all 10 items, responses were on a 5-point Likert scale ranging from 1 (definitely would) to 5 (definitely would not).
Key Findings In one study, middle school students receiving LST were compared with a control group of students receiving a program that was normally in place in New York City schools. At the 3-month posttest, LST participants reported lower normative expectations than control students for peer smoking and drinking (both p < .05) and for adult smoking (p < .05), drinking (p < .05), cocaine/hard drug use (p < .01), and inhalant use (p < .05). Similarly, at the 1-year follow-up, LST participants reported lower normative expectations than control students for peer smoking (p < .001) and drinking (p < .01) and for adult smoking (p < .01) and drinking (p < .05). LST participants also scored higher than control students on drug refusal skills at 1-year follow-up (p < .05). Significant effects on normative expectations for peer drinking were seen at 2-year follow-up, with LST participants reporting lower normative expectations than controls (p < .05).

Another study found that the rate of decrease in drug refusal skills was significantly slower from pretest to posttest and 1-year follow-up for 7th-grade students who received LST program compared with students from a minimal contact control condition (p < .01).
Studies Measuring Outcome Study 2, Study 3
Study Designs Experimental
Quality of Research Rating 3.9 (0.0-4.0 scale)
Outcome 3: Violence and delinquency
Description of Measures Violent and delinquent behaviors were assessed using 20 self-report items from the LifeSkills Training Questionnaire. Items related to verbal and physical aggression were adapted from Elliott, Huizinga, and Menard. Verbal aggression was measured using 7 items asking students the number of times in the past month they committed acts such as name-calling, yelling, cursing, or telling someone off. Mild physical aggression was measured using 3 items asking students the number of times in the past month they had pushed or shoved, tripped, or hit someone. Items related to fighting and delinquent behaviors were adapted from Hawkins and associates. Fighting was measured using 4 items asking students the number of times in the past year they engaged in behaviors such as picking a fight with someone or hitting someone to hurt the person seriously. Delinquency was measured using 6 items asking students the number of times in the past year they committed acts such as destroying others' property, throwing objects at people or cars, or shoplifting.
Key Findings Results of a study among middle school students demonstrated significant reductions in violence and delinquency at 3-month follow-up for LST participants relative to the control group of students who received a standard heath education curriculum (all p values < .05). Stronger effects were found for students who received at least half of the LST program. These effects included decreased verbal aggression (p < .01), physical aggression (p < .01), fighting (p < .001), and delinquency (p < .05).
Studies Measuring Outcome Study 4
Study Designs Experimental
Quality of Research Rating 4.0 (0.0-4.0 scale)

Study Populations

The following populations were identified in the studies reviewed for Quality of Research.

Study Age Gender Race/Ethnicity
Study 1 13-17 (Adolescent) 52% Male
48% Female
91% White
2% Asian
2% Black or African American
2% Hispanic or Latino
2% Race/ethnicity unspecified
1% American Indian or Alaska Native
Study 2 13-17 (Adolescent) 53% Female
47% Male
61% Black or African American
22% Hispanic or Latino
6% Asian
6% White
5% Race/ethnicity unspecified
Study 3 13-17 (Adolescent) 52% Male
48% Female
97% White
3% Race/ethnicity unspecified
Study 4 13-17 (Adolescent) 51% Male
49% Female
39% Black or African American
33% Hispanic or Latino
10% Race/ethnicity unspecified
10% White
6% Asian
2% American Indian or Alaska Native

Quality of Research Ratings by Criteria (0.0-4.0 scale)

External reviewers independently evaluate the Quality of Research for an intervention's reported results using six criteria:

  1. Reliability of measures
  2. Validity of measures
  3. Intervention fidelity
  4. Missing data and attrition
  5. Potential confounding variables
  6. Appropriateness of analysis

For more information about these criteria and the meaning of the ratings, see Quality of Research.

Outcome Reliability
of Measures
Validity
of Measures
Fidelity Missing
Data/Attrition
Confounding
Variables
Data
Analysis
Overall
Rating
1: Substance use (alcohol, tobacco, inhalants, marijuana, and polydrug) 4.0 4.0 3.8 3.9 4.0 4.0 3.9
2: Normative beliefs about substance use and substance use refusal skills 4.0 4.0 3.7 3.9 4.0 4.0 3.9
3: Violence and delinquency 4.0 4.0 3.8 4.0 4.0 4.0 4.0

Study Strengths

The outcome measures have excellent reliability and validity indicators and are supported by independent research. The investigators considered and controlled for confounding variables through the use of block randomization design and standardized data collections and by establishing baseline equivalence between groups. Sophisticated techniques were used to statistically account for attrition and missing data. Significant efforts were made to measure intervention fidelity, and adherence rates were high in some studies. The data analyses were appropriate for the study designs and types of data collected and support the inferences made about causal relationships.

Study Weaknesses

Attrition and adherence rates to fidelity were a minor concern in some studies.

Readiness for Dissemination

Materials Reviewed

The materials below were reviewed for Readiness for Dissemination. The implementation point of contact can provide information regarding implementation of the intervention and the availability of additional, updated, or new materials.

Readiness for Dissemination Ratings by Criteria (0.0-4.0 scale)

External reviewers independently evaluate the intervention's Readiness for Dissemination using three criteria:

  1. Availability of implementation materials
  2. Availability of training and support resources
  3. Availability of quality assurance procedures

For more information about these criteria and the meaning of the ratings, see Readiness for Dissemination.

Implementation
Materials
Training and Support
Resources
Quality Assurance
Procedures
Overall
Rating
4.0 4.0 4.0 4.0

Dissemination Strengths

Implementation materials are clear, concise, practical, and effectively targeted to multiple age groups. Initial core training, booster training, and train-the-trainer workshops are provided to support implementation. Training can be delivered on site or at open workshops across the country. Customized technical assistance is available. A comprehensive trainer certification process and an array of brief, easy-to-use outcome and fidelity tools are provided to support quality assurance.

Dissemination Weaknesses

No weaknesses were identified by reviewers.

Costs

The cost information below was provided by the developer. Although this cost information may have been updated by the developer since the time of review, it may not reflect the current costs or availability of items (including newly developed or discontinued items). The implementation point of contact can provide current information and discuss implementation requirements.

Item Description Cost Required by Developer
Grade level curriculum set $175-$275 depending on grade level Yes
Additional student guides $40-$60 for 10 depending on grade level No
Elementary Program CD-ROM (available for some grade levels) $45.95 each No
Smoking and biofeedback DVD $20 each Yes (for middle school program only)
Stress management techniques audio CD $10 each Yes (for middle school program only)
1-day, on-site workshop $200 per participant for up to 20 participants, plus travel expenses No
2-day, on-site workshop $250 per participant for up to 20 participants, plus travel expenses No
Off-site and online trainings $235 per participant No
1-day, on-site consultation $1,000 for up to 20 participants, plus travel expenses No
Half-day, on-site consultation $500 for up to 20 participants, plus travel expenses No
Phone and online consultation $75 per hour No
Email consultation Free No
Pre- and posttest instruments Free No
Fidelity checklists Free No