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Table 2 Constructs and items used in the model and Cronbach’s alpha coefficient (α)

From: The influence of ethnic identity on peruvian quinoa consumption: a top lima and modern metropolitan lima approach

Dimension

Items

Definition

Previous studies

Subjective norms

(α = 0.78)

SN1: I buy quinoa to give my family a nutritious meal

Social pressure perceived by an individual to show a specific behavior

Verbeke and Vackier [44]

SN2: I buy quinoa to give my family a healthy meal

SN3: Doctors and nutritionists think I should eat/buy quinoa

Attitude

(α = 0.86)

A1: It is reliable to eat quinoa

Degree in which a person has a favorable or unfavorable evaluation of the behavior

Verbeke and Vackier [44]

A2: Eating quinoa is wholesome

A3: Eating quinoa is nutritious

A4: Eating quinoa is safe

Past experience

(α = 0.78)

PE1: I have a lot of experience in buying quinoa

Way of anticipating difficulties or facilitating conditions that influence on the behavior

Verbeke and Vackier [44]

PE2: I am familiar with quinoa preparation

PE3: It is easy to prepare quinoa

PE4: I am familiarized with quinoa consumption

Health

(α = 0.78)

H1: Eating quinoa stimulates brain development

Inherent role of the diet in the well-being of the person

Carrillo et al. [9]

H2: Eating quinoa prolongs the years of life

H3: Eating quinoa makes me strong

Intention to eat quinoa

(α = 0.81)

I1: There’s a high probability that I will eat quinoa in the following two weeks

Willingness of people to perform a behavior. To what extent they are planning to make an effort with the aim of performing a behavior

Verbeke and Vackier [44], Ajzen [2]

I2: I’m planning to eat quinoa in the following two weeks

I3: My willingness to eat quinoa is high (I want to eat quinoa)

Ethnic identity

(α = 0.70)

EI1: I feel proud that quinoa is Peruvian

Includes ethnic attitudes and a sense of group belonging. The strength and valence of ethnic identity, termed affirmation and belonging, is represented by items that assess attachment, pride, and good feelings about the person’s ethnicity

Roberts et al. [38], Phinney [35]

EI2: I feel proud to be Peruvian

EI3: I am interested in the culture of the indigenous people of Peru

  1. Source: Own elaboration based on primary data