1 / 13

Marijuana Use & Academic Achievement

This study by Marion Hughes investigates the relationship between marijuana use and academic performance, measured by cumulative GPA. Using a contingency table and chi-square analysis, the initial hypothesis that marijuana use correlates with lower GPAs was not supported for the overall population. However, when controlling for sex, a significant relationship was found for female students, indicating that occasional users had lower GPAs. The findings suggest complexities in the relationship and highlight the need for further research, especially in light of marijuana legalization trends.

nara
Télécharger la présentation

Marijuana Use & Academic Achievement

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Marijuana Use & Academic Achievement Marion Hughes Sociology 391 Spring 2011

  2. Independent Variable: Marijuana Use Q. 110: How many days out of the past 30 have you used marijuana?  0  1-5  6-10  11-15  16-20  21+ Recoded into 3 ordinal categories:  0  1-5  6 +

  3. Dependent Variable: Cumulative GPA Q14. Please indicate the range that best categorizes your current cumulative grade point average.  Don’t have one  2.50 or less  2.51 – 2.67  2.68 – 3.50  3.51 or higher Recoded into three ordinal categories:  2.67 or less  2.68 – 3.50  3.51 or higher

  4. Research hypothesis • Students who use marijuana will have lower GPAs than students who do not. • The frequency of marijuana use is negatively related to cumulative grade point average.

  5. Method: contingency table X2 = 2.177, df = 4, p <.703

  6. Bivariate results • No statistically significant relationship between marijuana use and GPA • My hypothesis is not supported

  7. Control variable: Sex Q. 204. What is your sex?  female  male Hypothesis: Controlling for sex, the frequency of marijuana use is negatively related to cumulative grade point average.

  8. X2 = 10.910, df =4, p <.028 Cramer’s V = .235 Females

  9. Results for females • Moderately strong, statistically significant relationship between marijuana use and GPA • However, my hypothesis is not supported • The occasional users (1-5 times a month) have the lowest GPAs • 17.3% more of the women who used 6+ times last month have GPAs above 3.5 than women who never used

  10. X2 = 3.023,df = 4, p < .554 Males

  11. Results for males • No statistically significant relationship • Hypothesis not supported

  12. Outcome of elaboration • Hypothesis not supported by the data • Specification: significant relationship only exists for women, although not in the predicted direction

  13. Implications • Shortcomings: time order of variables • Further research • Legalization of marijuana

More Related