Assume that Latan and Darley want to demonstrate the external validity of their 1968 experiment on bystander intervention. To do this, they conduct a study in which participants solve crossword puzzles alone, or in large or small groups.
While the participants are working on the puzzles, they overhear a woman fall from a ladder and cry out, Oh, my leg I can't move it The researchers then observe and record the number of participants who attempt to help. The study described here represents a(n) ________ of the original seizure study.
a. manipulation check
b. replication
c. needless duplication
d. encore
Question 2
Mario conducts a study on what Caucasians perceive as physically attractive, then conducts the same study with African Americans, and then with Asian Americans as the sample. Mario is using ________ to determine the external validity of his findings.
a. meta-analysis
b. a cover story
c. surveys
d. replications
Ghostly experiment
Faces in experiment
Use an Automated External Defibrillator
(a) Blue arrows (right side): External components of the innate immune system: human body with skin, ...
Landsteiner's experiment demonstrating the exquisite specificity of the immune system.
Experiment: Response to Auxin