Long-term fear memory formation in the hippocampus and neocortex depends upon brain-derived neurotrophic factor (BDNF) signaling after acquisition. Incremental, appetitive odor discrimination learning is thought to depend substantially on the differentiation of adult-born neurons within the olfactory bulb (OB)--a process that is closely associated…

This study explored retention of idioms and novel (i.e. newly created or grammatically generated) expressions in English-speaking girls following exposure only once during a conversation. Our hypothesis was that idioms, because of their inherent holistic, nonliteral and social characteristics, are acquired differently and more rapidly than novel…

This fifth in a series of reports concerning school calendars examines the literature about learning, retention, and forgetting. The emphasis is necessarily on "time," as that is the major variable among calendars. Theories of memory are described: (1) storage and retrieval, and (2) imprint and trace decay. Relative to forgetting, a…