4. The following table gives a multi-trait multi-method matrix for the validity study of job satisfaction (abbreviated at JS in the table) and marriage satisfaction (abbreviated as MS) surveys. Self-report and spouse rating are two methods. Answering the following two questions based on the information from the table: (6 points)

	Self-report			Spouse rating scale
	JS	MS		JS	MS
Self-report
JS	(.98)
MS	.50	(.84)
Spouse rating scale
JS	.85	.20		(.92)
MS	.02	.60		.15	(.60)

1. To measure job satisfaction, which instrument should we use? Briefly explain.

2. To measure marriage satisfaction, which instrument should we use? Briefly explain.