Genuine causal relationship

Reference no: EM131011968

Ten marijuana users, aged 14 to 16, were drawn from patients enrolled in a drug abuse program and compared to nine drug-free volunteers of the same age group. Neuropsychological tests for short-term memory were given, and the marijuana group average was found to be significantly lower than the control group average. The marijuana group was held drug-free for the next six weeks, at which time a similar test was given with essentially the same result. The researchers concluded that marijuana use caused adolescents to have short-term memory deficits that continue for at least six weeks after the last use of marijuana.

(a) Can a genuine causal relationship be established from this study?

(b) Can the results be generalized to other 14- to 16-year-olds?

Reference no: EM131011968

Questions Cloud

Samples of caucasian-american and chinese-american : Suppose that random samples of Caucasian-American and Chinese-American individuals are obtained from patient records of doctors participating in a study to compare blood pressures of the two populations.

How to use the cast technique as an accident investigation : Your textbook spends a considerable amount of time helping us understand how to use the CAST technique as an accident investigation analysis tool while focusing on the why rather than the how and what aspects of the accident or incident

How would you use ir changes to allow you : a)How would you use IR changes to allow you to predict the success of this reaction (Fisher Esterification)?b)How 1H NMR can help you to predict the success of this reaction (Fisher Esterification)?

The adjusting entry to record depreciation for the company : Equipment with a cost of $150,000 has an accumulated depreciation of $100,000. What is the historical cost of the equipment?

Genuine causal relationship : (a) Can a genuine causal relationship be established from this study? (b) Can the results be generalized to other 14- to 16-year-olds? (c) What are some potential confounding factors?

If it requires 18.2 milliliters of 0.45 molar barium hydroxi : If it requires 18.2 milliliters of 0.45 molar barium hydroxide to neutralize 38.5 milliliters of nitric acid, solve for the molarity of the nitric acid solution. Write the balanced equation and solve showing all your work. Unbalanced equation: Ba(OH)..

Describe the general process of the cast technique : Explain how hindsight bias could affect the accident or incident investigation process. Describe the general process of the CAST technique

Four single-particle eigenfunctions : Find the different eigenfunctions of a system of two particles (i = 1 or 2) that can be formed from the four single-particle eigenfunctions, ψ1(i), ψ2(i), ψ3(i), and ψ4(i).

The fischer esterification of m-nitrobenzene : Propose a mechanism for the Fischer esterification of m-nitrobenzene to form m-nitrobenzoate

User Account

All Pages