Recognising Stress As stress increases, 'learned behaviour' tends to give way to the natural style, so the ISTJ will behave more according to type when under greater stress. For example, in a crisis, the ISTJ might: * find a place of solitude in which to think and work * use tried and trusted means of solving problems * direct or criticise others' efforts * use pragmatic solutions at the expense of the long term Under extreme stress, fatigue or illness, the ISTJ's shadow may appear - a negative form of ENFP. Example characteristics are: * having a gloomy view of a future * suggesting impractical ideas * acting impulsively, and changing things without any thought * having intense negative feelings towards others (though these might not be expressed)