there are 4 hypothesis

Hypothesis 1: Sleep quantity is positively associated with organizational citizenship behavior directed toward individuals (OCB-I).

Hypothesis 2: Sleep quantity is positively associated with organizational citizenship behavior directed toward organizations (OCB-O).

Hypothesis 3: Job satisfaction mediates the relationship between sleep quantity and organizational citizenship behavior directed toward individuals (OCB-I).

Hypothesis 4: Job satisfaction mediates the relationship between sleep quantity and organizational citizenship behavior directed toward organizations (OCB-O).

the independent variable: sleep quantity

the 1st dependent variable: organizational citizenship behavior toward individuals

the 2nd dependent variable: organizational citizenship behavior toward organizations

the continuous variable: sleep

control variables: age and caffeine

mediator: job satisfaction

Draw a conceptual model. Visual diagrams help an audience understand the relationships being examined among variables. For this, you'll first want to identify the focal variables in the article (HINT: There are four--not including controls, and they are the same in studies 1 and 2). Next, you'll want to diagram the relationships being tested using shapes and arrows to display the variables and direction of the relationships. This can be done in MS Word or PowerPoint (and most word processing applications). (HINT: you can draw the relationships as one model or two separate models, your choice). Also, make sure the model captures each hypothesis that is being tested as determined by the arrows in your diagram.

*** the choices of conceptual models would be

1. mediated regression (indirect & direct effect)
2. moderated-mediated regression
3. mediated regression (indirect effect)
4. moderated regression
5. regression with more than one outcome
6. multiple regression
7. regression

I believe its either mediated regression (indirect & direct effect) or mediated regression (indirect effect)