Although many people feel that expectations for personal space (usually about 18 inches for americans) are innate, members of many cultures are used to noticeably lesspersonal space than we are, which to demonstrate that our expectations for personal space are: a. the direct result of hormonal differences in the limbic systemb. usually negotiable and not all that hard to changec. a part of our culture and as such are learned, rather than innated. very difficult to measure accurately

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a. a researcher uses the customs office’s passenger lists for ships bringing immigrants to the us between 1820-1845 to track the numbers of immigrants from certain ethnic groups.b. a researcher conducts a linguistic study of comments posted on a local public blog.c. a developmental psychologist videotapes interactions between groups of toddlers and their care givers to determine which intervention methods most effectively manage aggression.d. a researcher asks the director of a local free clinic about the number of patients in the last two years with newly diagnosed hiv/aids.