What is the disorder referred to when individuals have difficulties in maintaining attention?

Among methods of studying the brain, __________ measures electricity, whereas

__________ measures magnetism. a. electrolytic lesions; transcranial magnetic stimulation. b. MRI; CT scan c. microelectrodes; magnetoencephalography d. PET; MRI e. CT scan; PET

Assume that Latané 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