Context

Context: Recommendation Agents (RAs)

Note: This list contains all the constructs (and corresponding measuring variables) as defined by the authors when proposing/using/applying the theories/models in the selected context. It also includes the scales used to measure the variables.

• Construct (Theory/Model): Cognitive Trust in Competence (TRA)

  Indicator	Scale	Reference(s)
  This RA is a real expert in assessing products.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  This RA has good knowledge about products.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)

• Construct (Theory/Model): Cognitive Trust in Integrity (TRA)

  Indicator	Scale	Reference(s)
  This RA provides unbiased product recommendations.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  This RA is honest.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  I consider this RA to be of integrity.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)

• Construct (Theory/Model): Emotional Trust (TRA)

  Indicator	Scale	Reference(s)
  I feel secure about relying on this RA for my decision.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  I feel comfortable about relying on this RA for my decision.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  I feel content about relying on this RA for my decision.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)

• Construct (Theory/Model): Familiarity (TRA)

  Indicator	Scale	Reference(s)
  I am familiar with how this RA makes its recommendation.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)

• Construct (Theory/Model): Perceived Personalization (TRA)

  Indicator	Scale	Reference(s)
  This RA understands my needs.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  This RA knows what I want.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  This RA takes my needs as its own preferences.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)

• Construct (Theory/Model): The Intention to Adopt as a Decision Aid (TRA)

  Indicator	Scale	Reference(s)
  I am willing to use this RA as an aid to help with my decision about which product to buy.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  I am willing to let this RA assist me in deciding which product to buy.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  I am willing to use this RA as a tool that suggests to me a number of products from which I can choose.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)

• Construct (Theory/Model): The Intention to Adopt as a Delegated Agent (TRA)

  Indicator	Scale	Reference(s)
  I am willing to delegate to this RA for my decision about which product to buy.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)
  I am willing to let this RA decide which product to buy on my behalf.	Likert 1-7, Strongly Disagree to Agree	(Komiak & Benbasat, 2006)