On the construct validity of interoceptive accuracy based on heartbeat counting: Cardiovascular determinants of absolute and tilt-induced change scores

Schulz, Andre; Back, Sarah N.; Schaan, Violetta K.; Bertsch, Katja und Vögele, Claus (2021): On the construct validity of interoceptive accuracy based on heartbeat counting: Cardiovascular determinants of absolute and tilt-induced change scores. In: Biological Psychology, Bd. 164, 108168

Abstract

Intemceptive accuracy (IAcc) as assessed with the heartbeat counting task (IAcc(HBCT)) may be affected by a range of factors including (1.) the ability to adequately detect cardiac signals, indicated by IAcc in a heartbeat discrimination task (IAcc(HBDT)), (2.) cardiac signal properties, affected by sympathetic and parasympathetic tone, and (3.) non-interoceptive processes, including time estimation accuracy (TEAcc). In the current study we investigated the contribution of these factors to absolute and Delta IAcc(HBCT) scores, induced by passive head-up and head-down tilt in 49 healthy individuals. A set of hierarchical regression models showed IAcc(HBDT) scores as the strongest and, across different orthostatic (tilt) conditions, most stable (positive) predictor of absolute and Delta IAcc(HBCT) scores. Neither indicators of cardiac signal properties (except for HR in head-down-tilt), nor TEAcc predicted absolute or Delta IAcc(HBCT) scores. These findings support the convergent and discriminant validity of absolute and Delta IAcc(HBCT) scores.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Psychologie und Pädagogik > Department Psychologie
• Themengebiete: 100 Philosophie und Psychologie > 150 Psychologie
• ISSN: 0301-0511
• Sprache: Englisch