Potential patterns of change in the subjective experience of stress and immune function following a severe stressor. These hypothetical individuals illustrate individual differences in rate of change (i.e., linear slope; see Person A vs. B), level (i.e., intercept; see Person B vs. C), and shape of trajectory (i.e., quadratic change; see Person C vs. D). Panel 2 shows the hypothesized immunity for these patterns in stress.