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Originalarbeit

Psychometrische Eigenschaften einer deutschsprachigen Übersetzung des Mental Toughness Inventory (MTI-D)

Published Online:https://doi.org/10.1026/0012-1924/a000192

Zusammenfassung. Das Mental Toughness Inventory (MTI; Middleton, Martin & Marsh, 2011) ist ein Selbstbeurteilungsinstrument zur Erfassung von 12 Facetten mentaler Stärke im Sport oder anderen leistungsbezogenen Kontexten. Ins Deutsche übersetzt, wurde das MTI–D an einer deutschsprachigen Stichprobe (N = 1 122), davon n = 914 Athletinnen und Athleten und n = 208 Studierende der Sportwissenschaft aus 41 Sportarten hinsichtlich Faktorstruktur, Messinvarianz, Reliabilität, Konstrukt- und Kriteriumsvalidität untersucht. Entsprechend der theoretischen Konzeption ergaben Bifaktorenanalysen für das MTI–D eine Struktur mit einem gemeinsamen Faktor und 12 spezifischen Faktoren. Die Reliabilität (ω) der Gesamtskala und der Subskalen lag zwischen .81 und .98, während die Werte für omega hierarchical subscale tiefer lagen (.07 ≤ ωHS ≤ .77). Der globale und die spezifischen Faktoren korrelierten hypothesenkonform mit dem Engagement und Leistungsniveau im Sport sowie dem Test of Performance Strategies (TOPS-D; Schmid, Birrer, Kaiser & Seiler, 2010) zur Erfassung mentaler Strategien im Sport. Zwar könnten einzelne Faktoren optimiert werden, doch es liegen Hinweise darauf vor, dass mit dem MTI–D mentale Stärke reliabel und valide erfasst werden kann.


Psychometric Properties of a German Translation of the Mental Toughness Inventory (MTI-D)

Abstract. The Mental Toughness Inventory (MTI; Middleton, Martin, & Marsh, 2011) is a self-description questionnaire measuring 12 facets of mental toughness in sports or other performance-oriented contexts. The German translation of the MTI, the MTI–D, was analyzed with respect to its factorial structure, measurement invariance, reliability, construct validity, and criterion validity using a German-speaking sample of N = 1,122 individuals comprising n = 914 athletes and n = 208 sport science students involved in 41 different sports. In line with the theoretical concept of the MTI and using a (bifactor) exploratory and confirmatory structural equation modeling framework, the analyses of the MTI–D yielded a factor structure with one general factor and 12 domain-specific factors. The results supported the measurement invariance of the MTI–D across gender and age. Omega estimates of composite reliability (ω) for the global and the domain-specific scales ranged between .81 and .91, while the omega hierarchical subscale was much lower (.07 ≤ ωHS ≤ .77). The MTI–D factors correlated in predictable ways with degree of sport involvement, level of achievement in sport, and the Test of Performance Strategies (TOPS-D; Schmid, Birrer, Kaiser, & Seiler, 2010), an instrument measuring mental strategies in sports. Despite the fact that some factors await further refinement, there is preliminary evidence that the MTI–D can be used as a reliable and valid questionnaire for assessing mental toughness.

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