Construct

Measurement items

Sources

Perceived similarity

(PS1) I share similar values with other members of this SNS.

[23] [29] [36]

(PS2) I participated in this SNS for the same purpose as other members do.

(PS3) I share similar interests with other members of this SNS.

(PS4) I share similar preferences with other members of this virtual community.

(PS5) I feel members in this SNS have similar experience to mine.

Reciprocity

(REC1) I know that other members in SNS will help me, so it’s only fair to help other members.

[52] [53]

(REC2) I believe that members in SNS would help me if I need it.

(REC3) I believe that members in SNS would help me if I need it, So it’s reasonable to help him when he needs.

Information quality

(IQ1) The information he established and shared is useful to me.

[25] [54]

(IQ2) The information he established and shared I is accurate.

(IQ3) The information he established and shared I is reliable.

(IQ4) The information he established and shared I is of high quality.

SNS interaction

(SIT1) I maintain close social relationships with some member in SNS.

[1] [47] [53]

(SIT2) I spend a lot of time interacting with some member in SNS.

(SIT3) I spend a lot of time interacting with some member in SNS.

(SIT4) I have frequent communication with some member in SNS.

Reputation

(REP1) Others have mentioned good things about some member.

[14] [25] [55]

(REP2) I have heard others speak favorably about some member.

(REP3) Other people have told me they are satisfied with some member.

(REP4) I have heard that most others are pleased with some member.

Satisfaction

(SF1) I think that I make the right decision to make friends with some member.

[9]

(SF2) My experience with some member is very pleasurable.

(SF3) I feel satisfied with the some member.

Shared value

(SV1) Members in this SNS share the vision of helping others solve their professional problems.

[1] [56]

(SV2) Members in this SNS share the same goal of learning from each other.

(SV3) Members in this SNS share the same value that helping others is pleasant.

(SV4) members in this SNS obey the social norms and regulations.

Trust

(TRU1) Members in SNS will not take advantage of others even when the opportunity arises.

[47]

(TRU2) Members in SNS will always keep the promises they make to one another.

(TRU3) Members in SNS would not knowingly do anything to disrupt the conversation.

(TRU4) Members in SNS behave in a consistent manner.

(TRU5) Members in SNS are truthful in dealing with one another.