Identify and describe one threat to the external validity of Rapunzel’s study and explain why it is a problem or how it could change the results of Rapunzel’s study.

Which of the following participant samples would most likely generalize to the population of teenage American girls?

Dr. Dormeur wants to replicate her study to address problems with her laboratory study. She provides her participants with a sleep-tracking bracelet so participants can complete the study from the comfort of their home. She asks participants to report their typical bedtime and then texts participants 10 minutes before their reported bedtime every three days over the course of two weeks. Participants are asked to complete a 10-minute survey from their phone while in bed. She examines the time to fall asleep on days when participants are texted before bed and days when they are not texted before bed. By changing the setting of her study, she is attempting to:

A researcher has participants complete three memory tasks in the same session. Performance improves across the tasks simply because participants get used to the procedure. This is an example of a:

A within-groups design means that:

Dr. Gavin is conducting a 2 × 3, between-subjects factorial design. Assuming he wants 20 people in each condition, how many participants does Dr. Gavin need to recruit?

Assume that sampling risk is set at 5%, sample size is 30, and the audit team finds zero deviations in the sample. Use the evaluation table below and select the answer that is the correct interpretation of the upper limit of deviation. 

Write out the following numbers in letter or digit number. Write in the box below the questions # and your answers. Cent vingt-cinq   →  Cent quatre-vingt-dix   → 300 → Deux cent cinquante   →    2.000 →    

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