How does smoking marijuana affect willingness to work? Canadian researchers pers

Question

How does smoking marijuana affect willingness to work? Canadian researchers persuaded young adult men who used marijuana to live for 98 days in a "planned environment." The men earned money by weaving belts. They used their earnings to pay for meals and other consumption and could keep any money left over. One group smoked two potent marijuana cigarettes every evening. The other group smoked two weak marijuana cigarettes. All subjects could buy more cigarettes but were given strong or weak cigarettes depending on their group. Did the weak and strong groups differ in work output and earnings?

Which of the following outlines describes the design of the experiment?

Use Table B, starting at line 110 to carry out the randomization your design requires. Who are the first 3 smokers to be assigned to the first group?

Could this be run as a double-blind experiment?

Abate Dubois Gutierrez Lucero Rosen Afifi Engel Huang McNeill Thompson Brown Fluharty Iselin Morse Travers Cheng Gerson Kaplan Quinones Ullmann Random assignment Treatment 1 Group 1 smoke potent marijuana cigarettes Treatment 2 Group 2 smoke weak marijuana cigarettes A Compare work output earning Design 1

Explanation / Answer

1)Answer-Design 1

This experiment has one factor : strength of the cigarettes.

The response is work output.

There are two levels of the factor : strong and weak cigarettes and therefore two treatments.

An equal number of young men should be randomly assigned to each one of the treatments (strong or weak cigarettes) and the work output would be measured for each one of the young men.

2) Table b is missing in the question, so i will not be able to answer this part.

3)A double Blind experimental design is one where neither subjects receiving the experimental treatments nor the experimenters (those who are giving the experimental treatments) know which experimental treatment is being applied to the subject. The goal of this design is to eliminate any possible effect that might be caused by the subjects or the experimenters knowing which experimental treatment they are getting.

So clearly answer will be No, because they should be able to detect the difference between the strong and weak cigarettes.

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