A recent British study tracked thousands of people over 27 years to examine the effect of marijuana on mental health. They found that people who used marijuana had roughly a 40 percent higher chance of developing a psychotic disorder later in life. This study is an example of: Correct: an observational study Incorrect a non-randomized, controlled experiment, but not doubleblind Incorrect a randomized, double-blind, controlled experiment Incorrect a randomized, controlled experiment, but not doubleblind Incorrect a non-randomized, double-blind, controlled experiment Computer's answer now shown above. You are correct. Your receipt no. is 154-5090 9 m Based only on the results of this study, which of the following conclusions is most appropriate? 0 Marijuana use is associated with but denitely doesn't cause an increased risk of a psychotic disorder: Marijuana use causes an increased risk of a psychotic disorder. ' Marijuana use is associated with and may cause an increased risk of a psychotic disorder. ' There is no relationship between marijuana use and psychotic disorders. Submit Answer Tries 1/2 Previous Tries Below are either confounders that mix up the study, causal links that explain how marijuana could lead to a psychotic disorder, or neither. Choose your answers based only on the information given. Genetics some people are more susceptible to psychosis than others \" Confounder O Causal link Neither Submit Answer MTries 1/2 Previous Tries Neurotransmitter Interruption- Marijuana interrupts important neurotransmitters like dopamine that could lead to a disruption of the brain's communication systems 0 Confounder " Causal link \" Neither