Answer to Question 1
According to Suls and Martin, the answer lies in understanding how the neurotic cascade is experienced. The neurotic cascade involves five distinct though interrelated processes they labeled: (1) Hyperreactivity, (2) Differential Exposure, (3) Differential Appraisal, (4) Mood Spillover, and (5) The Sting of Familiar Problems. Each mechanism in the cascade serves to reinforce the other as each prompts a series of unfortunate yet somewhat predictable set of interlocking events.
Answer to Question 2
The NEO stands for the three personality factors used in the first version of the instrument of Neuroticism (N), Extraversion (E), and Openness (O) (PI stands for personality inventory). The last two factors of Conscientiousness (C) and Agreeableness (A) were subsequently added to complete the Big Five. A useful mnemonic for remembering the Big Five is OCEAN (Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism)though the factors are usually presented in the order of NEOCA, it's fine to mix the order of the factors since order does not imply importance.
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