Table 1. Correlation matrix of affect features and self-reported SWL.

	1.	2.	3.	4.	5.
1.self-reported SWL
2. sentiment	0.21
3. positive frequency	0.08	0.68
4. negative frequency	-0.23	-0.50	0.12
5. positive / negative	0.16	0.68	0.45	-0.48

All the results have p values less than 0.001.

Sentiment: mean sentiment score of a user; positive frequency: proportion of positive status among all status of a user; negative frequency: proportion of negative status among all status of a user; positive/negative: ratio between positive and negative frequency.