Ron is running an experiment to see if certain sounds can improve memory. while testing the subjects’ memory, ron unintentionally smiles when the subjects seem to be arriving at the proper answer. his smile the subject pick the correct answer. in this case, ron is showing

a. invalid experimental placebos.
b. experimental bias.
c. experiment effect.
d. informed consent.

"i know there may have been concerns that it may be too vague or too costly, or may lead endlessly to litigation. but i want to reassure you right now that my administration and the united states congress have carefully crafted this act. we've all been determined to ensure that it gives flexibility, particularly in terms of the timetable of implementation, and we've been committed to containing the costs that may be incurred. let the shameful wall of exclusion finally come tumbling down." president george h.w. bush, july 26, 1990 the act president bush speaks of was enacted to guarantee equal rights to people of all races. people of all sexes. eliminate people who are homeless. people with disabilities.

Is it true the ancient egyptians created a calendar that had 10 days in a week

African american men were illustrated as men who