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Dr. Everdeen is interested in developing a self-report instrument to measure propensity toward violence in teenagers. To that end, she creates a list of 25 items she believes may measure propensity toward violence. Some of the items include "I would never harm my parent/s or sibling/s," "I would never harm my pet/s," and "I would never harm my best friend." Responses to all items are based on a 5-point Likert scale where 1 indicates very true and 5 indicates very untrue. She administers this survey, along with another survey known to identify beliefs supportive of aggression, to five of her closest friends. She finds a strong correlation between the two measures and concludes her survey is a valid and reliable assessment of violent tendencies.
What issues do you see with how Dr. Everdeen went about creating her instrument? Fix them!

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Dr. Everdeen is interested in developing a self-report instrument to measure propensity toward violence in teenagers. To that end, she creates a list of 25 items she believes may measure propensity toward violence. Some of the items include "I would never harm my parent/s or sibling/s," "I would never harm my pet/s," and "I would never harm my best friend." Responses to all items are based on a 5-point Likert scale where 1 indicates very true and 5 indicates very untrue. She administers this survey, along with another survey known to identify beliefs supportive of aggression, to five of her closest friends. She finds a strong correlation between the two measures and concludes her survey is a valid and reliable assessment of violent tendencies.
What issues do you see with how Dr. Everdeen went about creating her instrument? Fix them!

Fix It Dr. Everdeen Is Interested in Developing a Self-Report Instrument to Instrument