WJEMSD · Vol 22, No 3 · 2026Research

Innovation for Sustainability: Convergent Mixed Method Strategies for Instrument Development in Impulsive Buying

Research Scholar, Faculty of Business and Communications
INTI International University
Professor, Faculty of Business and Communications
INTI International University
Director, International Relations Collaboration Centre
INTI International University
Received: 11 December 2025Revised: 19 January 2026Accepted: 30 January 2026Published: 23 March 2026
Purpose

This study investigates the influence of perceived quality, brand awareness, and influencer effects on impulsive buying behaviour and its consequences for financial health.

Design/Methodology/Approach

This study employs a convergent mixed-methods design. Quantitative data were collected from 40 Millennials via a structured questionnaire, while qualitative data were gathered from two semi-structured interviews conducted at the pilot stage. Instrument validity and reliability were assessed using face validity, sampling validity, convergent and discriminant validity, and expert review of qualitative methods.

Findings

Sampling validity, convergent, and discriminant validity were met, although AVE values for Perceived Quality and Brand Awareness fell below the 0.5 benchmark. Items loading above 0.7 were re-selected to address the issue. Qualitative results revealed contrasting brand preferences, providing depth to the quantitative analysis.

Original/Value of the Paper

This study introduces a validated mixed-methods framework for diverse products and services, including online purchases, food, and fashion.

Research Limitations/Implications

A small sample size and construct validity issues limit generalisability.

Practical Implications

The study recommends standardised scales and urban sampling for future research to enhance robustness and applicability.

Keywords
Consumer BehaviourHuman HealthImpulsive BuyingImpulse PurchaseInstrument DevelopmentOnline PurchasesMixed MethodFinancial Well-BeingResearch Strategies
Citation

Ven, C. P., Hoo, W. C. and Raman, A. (2026): Innovation for Sustainability: Convergent Mixed Method Strategies for Instrument Development in Impulsive Buying. World Journal of Entrepreneurship, Management and Sustainable Development (WJEMSD), Vol. 22, No. 3, pp. 283-300.