Because of the overlap in anxiety disorders and trauma or stress-related disorders, the lectures highlighted two predominate aspects of (mal)adaptive emotions when trying to understand the nature of these conditions. One aspect involves _____ which is an unpleasant, diffuse, vague sense of apprehension often a response to an imprecise or unknown threat. This emotion often may lead to avoidance behaviors. Another aspect involves ______ which is an emotional response to a known or definite threat and involves an arousal surge. This emotion often may lead to escape behaviors.