Dr.Bloedorn is a health psychologist who researches nutrition.She is curious as to whether a new drink additive will help people consume fewer calories during a meal.The drink additive is a white,odorless,tasteless powder that a person can add to any drink.She collects a random sample of 63 overweight students on campus and measures the calories they eat during lunch,using a bomb calorimeter.She then gives this additive to the same 63 participants to use at dinner and measures how many calories they eat (again,using the bomb calorimeter).

-Which of the following threats to internal validity will Dr.Bloedorn NOT be worried about?
A)Testing effect
B)Attrition
C)Instrumentation
D)Placebo effects

Question

Dr.Bloedorn is a health psychologist who researches nutrition.She is curious as to whether a new drink additive will help people consume fewer calories during a meal.The drink additive is a white,odorless,tasteless powder that a person can add to any drink.She collects a random sample of 63 overweight students on campus and measures the calories they eat during lunch,using a bomb calorimeter.She then gives this additive to the same 63 participants to use at dinner and measures how many calories they eat (again,using the bomb calorimeter) .

-Which of the following threats to internal validity will Dr.Bloedorn NOT be worried about?

-Which of the following threats to internal validity will Dr.Bloedorn NOT be worried about?
A)Testing effect
B)Attrition
C)Instrumentation
D)Placebo effects

Quizplus · Accepted Answer

The Answer of 
Dr.Bloedorn is a health psychologist who researches nutrition.She is curious as to whether a new drink additive will help people consume fewer calories during a meal.The drink additive is a white,odorless,tasteless powder that a person can add to any drink.She collects a random sample of 63 overweight students on campus and measures the calories they eat during lunch,using a bomb calorimeter.She then gives this additive to the same 63 participants to use at dinner and measures how many calories they eat (again,using the bomb calorimeter).

-Which of the following threats to internal validity will Dr.Bloedorn NOT be worried about?
A)Testing effect
B)Attrition
C)Instrumentation
D)Placebo effects

DrBloedorn Is a Health Psychologist Who Researches Nutrition