# The Well-Being Coaching Inventory (WCI): Questionnaire Development and Validation

## TL;DR

This paper introduces and validates a new questionnaire to measure overall well-being in health and wellness coaching.

## Contribution

The study presents a validated 20-item Well-Being Coaching Inventory with four dimensions for health and wellness coaching.

## Key findings

- The WCI was reduced from 49 to 20 items after psychometric evaluation.
- Confirmatory factor analyses supported the inventory's convergent validity.
- The WCI demonstrates predictive validity through correlations with related concepts.

## Abstract

The aim of the present study was to psychometrically test and validate the Well-being Coaching Inventory (WCI), a proposed measure of interconnected, whole-person well-being in the context of health and wellness coaching (HWC).

Initially 49 items, the WCI was conceived with 4 dimensions: Mind, Body, Work, and Life. The inventory was evaluated in 3 sequential studies to test: (a) face validity, (b) convergent validity, and (c) predictive validity. Expert judgment, correlational analyses, and factor analyses were techniques applied to collected WCI data.

After statistical evaluation (n = 261) of fit to each dimension, the WCI was shortened to 20 items that demonstrated convergent validity. Further use of confirmatory factor analyses and exploratory structural equation model in a large sample study (n = 531) provided additional support for the inventory’s convergent validity. Through correlation analyses to theoretically related concepts predictive validity was established.

The WCI is a valid, applicable, and reliable scale for use in HWC research and practice. It is an instrument that will aid HWC practitioners and researchers as a central outcome measure for their practice.