Ian tends to be very shy about participating in class discussions. You decide to try to promote greater participation in class discussion by first smiling encouragingly at him when he merely looks interested in saying something, then smiling at him when he raises his hand, and then praising him when he actually makes a contribution. The technique you are using is referred to as:.
a. spontaneous recovery. b. shaping.
c. extinction.
d. positive reinforcement.

Lava and other matierls luanced from a volcano and into the air are referenced as

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.

Federalism began to spread super soon after