Explain Sperling's experiments about sensory memory. Compare and contrast the results of the whole- vs. partial-report methods, and use this example to explain how clever experimentation can reveal rapid cognitive processes that we are usually unaware of.

This passage would suggest that sudan might have a a) democracy. b) dictatorship. c) command economy. d) communist government.

According to the federal regulations, which of the following studies meets the definition of research with human subjects? a study of twenty 4th grade classrooms in which researchers ask the schools to systematically vary the time of day reading is taught, and collect weekly assessments of reading comprehension for each child over a three-month period.the collection of data, by a playground designer hired by the superintendent of schools, about the physical dimensions of school playgrounds, presence of fencing, and the kinds of equipment currently provided.a feasibility study for implementing a year-round school program, focusing on economic issues such a facilities utilization and transportation costs.an analysis of aggregate data comparing statewide high school graduation rates provided by the state department of public instruction, using county tax information.

How do direct democracry and representative democary differ