Table 1.

The tasks Turkers performed and the resulting intraclass correlation (ICC) for each construct.

Construct		ICC	Definition for Turkers	Prompt for Turkers
Emotional self-disclosure			Emotional self-disclosure is concerned with the extent to which the writer has discussed her feelings and emotions with others, such as happiness, fears, sadness, and anger.
	Positive emotional self-disclosure	0.90	Example of positive emotional self-disclosure: “Now that chemo is done, I find myself waking up in the morning feeling a huge burden has been lifted from my shoulders.”	To what extent does this message contain positive emotional self-disclosure?
	Negative emotional self-disclosure	0.94	Example of negative emotional self-disclosure: “I am freaked out after reading my mammogram report.”	To what extent does this message contain negative emotional self-disclosure?
Informational self-disclosure			Informational self-disclosure is concerned with the extent to which the writer has discussed her personal information with others, such as health conditions, diagnosis results, and family status. Informational self-disclosure can be related to the positive, negative, or neutral life events of the writer.
	Positive informational self-disclosure	0.85	Example of positive informational self-disclosure: “Took family to Cleveland Zoo for the first time in years and years.”	To what extent does this message contain positive informational self-disclosure?
	Negative informational self-disclosure	0.91	Example of negative informational self-disclosure: “I found a lump in my armpit about 5 weeks ago. It’s not fixed, but moveable. I have periodic tingling or single sharp pains in my left breast every once in a while.”	To what extent does this message contain negative informational self-disclosure?
Asking a question		0.91	When asking a question, the writer is requesting a response from the group. Questions can be asked directly and indirectly. Examples of questions: “What will you go through for a small chance to live longer?” “So I guess my question is, can a NOT dense breast, just average, have missed tumors on imaging?” “I am wondering if anyone has any advice on what I should do?” “Looking for any insight others may have on this.”	To what extent is this message asking a question?
Eliciting support
	Emotional support elicitation	0.91	When seeking emotional support, the writer is trying to get understanding, encouragement, affirmation, sympathy, or caring.	To what extent is this message seeking emotional support?
	Informational support elicitation	0.95	When seeking informational support, the writer is trying to get advice, referrals, or knowledge.	To what extent is this message seeking informational support?
Providing support			There are 2 kinds of social support: emotional support and informational support.
	Provide emotional support	0.92	Emotional support messages provide understanding, encouragement, affirmation, sympathy, or caring.	How much emotional support does this message provide?
	Provide informational support	0.92	Informational support messages provide advice, referrals, or knowledge.	How much informational support does this message provide?