You want to study “sleep quality”  Provide:  a. One conceptu…

You want to study “sleep quality”  Provide:  a. One conceptual definition of sleep quality.  b. Two different operational definitions (measures) that could capture sleep quality.  c. One reason using only a single self-report item could be problematic (hint: construct validity). 

Use table below to answer the following: Study summary De…

Use table below to answer the following: Study summary Details Research question Are caffeine and sleep quality related? Variables measured Daily caffeine intake (mg); Sleep quality (1–10 rating) Finding r = −.35, 95% CI , p < .001 Sample n = 220 adults recruited from one university   a. What type of claim does this support?  b. Are the variables categorical or quantitative?  c. Interpret the association direction (positive/negative/zero).  d. Name two validity questions you would ask next (choose the two most relevant and write them).