General · EdgepediaOctober 10, 20265 min read

Volker Trommsdorff

Volker Trommsdorff (born 1943 in Höxter) is a German economist and marketing scholar who held the marketing chair at the Technische Universität Berlin from 1978 until his emeritation in 2012, and who is known in German-speaking marketing scholarship for his states-and-processes model of consumer behavior, his work on product-image and brand-value measurement, and the textbook Konsumentenverhalten, which reached its ninth edition in 2022.¹^•²

Key fact	Detail
Chair	Marketing chair (Schwerpunkt Handel), TU Berlin, 1978 to 2012¹
Signature textbook	Konsumentenverhalten, 9th revised edition 2022, 360 pages, with Dirk-Mario Boltz²
Editorship	Editor of the Handelsforschung yearbook series from 1986 for 21 subsequent years; 13 volumes indexed³

Life and career

In 1978 he was appointed to the newly created marketing chair at the TU Berlin, a position he held until 2012, when he became emeritus; his listed research areas were consumer behavior theory, market research methods, innovation marketing, and international marketing with a particular interest in China.¹^•⁵

Alongside the chair he directed the Forschungsstelle für den Handel (FfH) in Berlin, a non-profit, independent retail research institute connected to chambers, associations, universities, and public bodies. His scientific directorship is dated from 1983 to 1998; a 1988 volume of the institute's yearbook already names him as its scientific director.⁶ The 1988 Handelsforschung volume prioritized retail location questions, reflecting the intense competition for retail sites at the time.⁶

Major contributions

Consumer behavior: states and processes. The organizing idea of his textbook is that consumer behavior is explained by two kinds of variables: states of the consumer, such as activation, emotions, motives, attitudes, values, and lifestyles, and processes, such as perception, learning, memory, and decision-making. The 2022 ninth edition retains this concept explicitly.²^•⁴ The seventh edition (published 18 December 2008) structured the book around the distinction between behavior-relevant consumer states and processes of information acquisition and processing, with every chapter closing on measurement methodology.⁷ The eighth edition (2011), co-authored with Thorsten Teichert of the Universität Hamburg, integrated recent psychophysiological and neuroscientific consumer research and gave decision behavior and post-purchase behavior their own chapters.⁸ The textbook is positioned for marketing practitioners, consumer-protection advocates, and business students, including protection against unwanted or unethical influence.²

Image and brand-value measurement. His early monograph Die Messung von Produktimages für das Marketing: Grundlagen und Operationalisierung (1975) documented product-image measurement as a research field.⁹ This monograph is also the origin of the Trommsdorff model, a compositional scaling procedure for multidimensional attitude measurement in empirical social research and market research, in which objects are rated on predefined attributes, the attributes are condensed into dimensions by factor analysis, and the objects are then positioned in a matrix or image.¹³ In analogy to the Fishbein model, it captures and links the affective and cognitive components of attitude by comparing perceived attribute levels with the subjectively ideal ones, a comparison that makes the respondent's evaluation standards transparent.¹³ With B. Paulssen in 2001 he presented the WISA model (Wettbewerbs-Image-Struktur-Analyse), a causal-analytical explanation of brand strength derived from a brand's own image profile and those of competitors; the model has been deployed commercially by the consultancy trommsdorff + drüner.¹⁰

In brand valuation he argued that no universally valid brand value can exist, because value depends on the evaluation purpose, the evaluation situation, and the motives of the evaluator.¹⁰ He also noted that different valuation methods yield different results, which at minimum requires continuity in the method used so that values remain comparable over time.¹⁰

Innovation marketing. The textbook Innovationsmarketing, with Fee Steinhoff, appeared in a second, fully revised edition from Verlag Franz Vahlen, Munich, on 26 September 2013 (428 pages), restructured into introduction, foundations and theories, strategies, and market-research methods organized by six innovation-process phases. It covers empirical new-product success-factor research, conjoint analysis for product design and acceptance estimation, and diffusion forecasting for market prognosis.¹

By the numbers

The measurable record is uneven. A single bibliometric record lists Trommsdorff with an h-index of 10 and 809 citations, and his co-author Dirk-Mario Boltz with an h-index of 2 and 291 citations; the 2022 edition of Konsumentenverhalten carries 277 citations in the same record, and his 2004 Gabler chapter "Verfahren der Markenbewertung" carries 10.⁴^•¹¹ The textbook itself ran through at least nine editions between the late 1980s or 1998 and 2022 (see the dating question below), and EconBiz indexes 13 volumes of the Handelsforschung series he edited plus 8 TU Berlin discussion papers.²^•³

Roles in the German marketing community

He spoke at the DWG congress transfer XXVI in Hamburg on 13 February 2002 on securing campaign success and the dos and don'ts of advertising pretesting.¹² Writing from an insider position, he describes a DWG annual congress "transfer" in the early 1990s as the starting point of a German research boom on the theory and measurement of brand values.¹⁰

Application in practice: brand valuation

The documented commercial application is a medical-products provider for whom trommsdorff + drüner carried out a combined image and brand-value analysis, using conjoint measurement of absolute brand values and WISA modeling of brand strength, across several stakeholder groups: doctors, head nurses, patients, hospital purchasing, and controlling. The study quantified monetary brand value per stakeholder group and showed that raising the quality image had more positive effects on brand value than price cuts, and that establishing sub-brands positively influenced overall brand value.¹⁰ The model also supported a marketing-efficiency analysis showing which euro spent had what effect on product and corporate brand value, a step toward monetary brand controlling.¹⁰

His critique of monetary valuation models rests on their divergence. For the year 2000, published Coca-Cola brand values ranged from 0.2 billion USD through 33 billion EUR to 69 billion EUR; for the same point in time the two leading valuers Interbrand and Semion produced 21 and 34 billion EUR for DaimlerChrysler, 13 and 6.6 billion EUR for BMW, and 7.8 and 17.5 billion EUR for VW (Brand Rating 2003). As of summer 2003 there were no generally accepted brand-valuation standards comparable to accounting standards, and the competing models kept their recipes secret.¹⁰

References

Initially written Oct 10, 2026 · Edited: Oct 11, 2026; Oct 12, 2026; Oct 15, 2026; Oct 25, 2026