مقایسهٔ روش‌ها

	مقیاس کیفیت خدمات الکترونیکی ای-اس-کوال (E-S-QUAL)	شاخص رضایت مشتریان آمریکا (ACSI)
حوزه	مدیریت بازاریابی	مدیریت بازاریابی
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	2005	1996
پدیدآور	A. Parasuraman, Valerie A. Zeithaml, Anantharanthan Malhotra	Claes Fornell, Michael D. Johnson, Eugene W. Anderson, Jaesung Cha, Barbara E. Bryant
نوع	Multi-dimensional electronic service quality scale	Structural equation model for satisfaction and loyalty
منبع بنیادین	Parasuraman, A., Zeithaml, V. A., & Malhotra, A. (2005). E-S-QUAL: A Multiple-Item Scale for Assessing Electronic Service Quality. Journal of Service Research, 7(3), 213-233.	Fornell, C., Johnson, M. D., Anderson, E. W., Cha, J., & Bryant, B. E. (1996). The American Customer Satisfaction Index: Nature, Purpose, and Findings. Journal of Marketing, 60(4), 7-18.
نام‌های دیگر	E-S-QUAL, Online Service Quality Scale	ACSI, National Customer Satisfaction Index
مرتبط	3	4
خلاصه	E-S-QUAL is a 22-item scale developed by Parasuraman, Zeithaml, and Malhotra (2005) to measure service quality in electronic commerce and digital service environments. Adapting the foundational SERVQUAL dimensions to online contexts, E-S-QUAL assesses four core dimensions: Efficiency (ability to complete transactions quickly), Fulfillment (accurate order fulfillment and on-time delivery), System Availability (website uptime and technical performance), and Privacy (security of customer data and transactions). The scale captures both service delivery (how the website functions) and service recovery (how problems are handled).	The American Customer Satisfaction Index (ACSI), developed by Fornell and colleagues in 1996, is a structural equation modeling-based approach to measuring and predicting customer satisfaction across industries and over time. ACSI assesses customer expectations, perceived value, perceived quality, complaints, and loyalty in a unified framework. Since 1994, ACSI data has been collected quarterly on thousands of customers across diverse U.S. industries, making it a key economic indicator and benchmark for organizational performance.