_____ occurs when the same beliefs or perspectives are amplified and reinforced in a social network.

		An echo chamber
		The contagion effect
		The bystander effect
		The self-serving bias
		Network centrality

David's family comprises his parents and his elder brother Adam. The relationships between David and each of his parents and the relationship between him and his brother are interconnected and form a network. In the context of the social network perspective, the connection between David and his brother is a __________.

		dyad
		triad
		clique
		quintet
		quartet

state that the relationship between leader behavior and leadership effectiveness depends on the demands of a situation.

		Transactional leadership approaches
		Contingency approaches
		Trait approaches
		Relational transparency approaches
		Administrative leadership approaches