Final answer:
The two factors that strongly predict happiness are material prosperity and psychosocial prosperity.
Step-by-step explanation:
The two factors that strongly predict happiness, as listed by the author, are material prosperity and psychosocial prosperity.
Material prosperity refers to the level of wealth and resources an individual possesses. Research has shown that individuals who have higher levels of material prosperity, such as higher income and access to resources, tend to have a higher life evaluation and report higher levels of happiness.
Psychosocial prosperity, on the other hand, refers to factors such as social connections, meaningful relationships, and positive emotions. Individuals who have strong social support systems, experience positive emotions frequently, and have fulfilling relationships are more likely to report higher levels of happiness.