Damon's teachers frequently complain that he disrupts his kindergarten class by fidgeting and moving about all the time. he does not pay any attention to what is being taught in class and behaves impulsively. considering the presence of the tell-tale characteristics of inattention, hyperactivity, and impulsivity, damon's pediatrician diagnosed him with:

What is the most common way for americans to receive their news?

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.

In exchange for land, a knight agrees to be a sort of sub-vassal to a vassal. this agreement was known as: investiture homage tyranny subinfeudation