Measuring Strong, Skillful, Good and Transpersonal Will: The Development of the Multidimensional Will Scale

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2024 Jul 11

PMID 38990857

Authors

Andrea Bonacchi

Georgia Marunic

Carlotta Tagliaferro

Rebecca Boschi

Chloe Lau

Francesca Chiesi

Affiliations

Soon will be listed here.

Abstract

Background And Objective: This cross-sectional study aimed to provide a scale to assess different aspects of the will based on Roberto Assagioli's theory.

Methods And Results: The scale development followed three steps. Step 1 focused on operationalizing the construct and developing the items. It was carried out through several phases of item generation and refinement, resulting in a pool of 38 items. At Step 2 we tested the psychometric properties of the initial 38-item scale with the goal of excluding the items that weakened the structural validity and reliability of the scale. Descriptive, internal consistency, and exploratory factor analyses statistics were computed on a large sample (Sample 1: N = 587; age: M = 21.55, SD = 4.14, 66% female) and they led to a five-dimension model (Strong, Skillful, Good toward Self and Other, and Transpersonal Will) and the exclusion of 15 items. Analyses conducted at Step 3 on a different sample (Sample 2: N = 683; age: M = 34.09, SD = 16.27, 54% female) allowed for further refinement of the scale. Confirmatory factor analysis conducted on the resulting 19-item scale showed a good fit for the five-factor model (χ2 (142) = 507.63, p< .001, TLI = .91; CFI = .93; RMSEA = .06 [90%CI: .06‒.07]), and evidence of its invariance across genders and ages was provided. Reliability indices (internal consistency and intraclass correlation coefficients) were adequate (ranging from .66 to .83) and correlations with measures of related constructs supported the external validity of the scale.

Conclusion: This study provides researchers, therapists, and counselors with an efficient measurement tool to assess Assagioli's construct of will.

References

Koo T, Li M . A Guideline of Selecting and Reporting Intraclass Correlation Coefficients for Reliability Research. J Chiropr Med. 2016; 15(2):155-63. PMC: 4913118. DOI: 10.1016/j.jcm.2016.02.012. View

Pearlin L, Schooler C . The structure of coping. J Health Soc Behav. 1978; 19(1):2-21. View

Chiesi F, Bonacchi A, Lau C, Tosti A, Marra F, Saklofske D . Measuring self-control across gender, age, language, and clinical status: A validation study of the Italian version of the Brief Self- Control Scale (BSCS). PLoS One. 2020; 15(8):e0237729. PMC: 7446922. DOI: 10.1371/journal.pone.0237729. View

Polit D . Getting serious about test-retest reliability: a critique of retest research and some recommendations. Qual Life Res. 2014; 23(6):1713-20. DOI: 10.1007/s11136-014-0632-9. View

Metcalfe J, Mischel W . A hot/cool-system analysis of delay of gratification: dynamics of willpower. Psychol Rev. 1999; 106(1):3-19. DOI: 10.1037/0033-295x.106.1.3. View

Lenzenweger M, Clarkin J, Kernberg O, Foelsch P . The Inventory of Personality Organization: psychometric properties, factorial composition, and criterion relations with affect, aggressive dyscontrol, psychosis proneness, and self-domains in a nonclinical sample. Psychol Assess. 2002; 13(4):577-91. View

Carver C, Scheier M . Control theory: a useful conceptual framework for personality-social, clinical, and health psychology. Psychol Bull. 1982; 92(1):111-35. View

Chiesi F, Galli S, Primi C, Innocenti Borgi P, Bonacchi A . The accuracy of the Life Orientation Test-Revised (LOT-R) in measuring dispositional optimism: evidence from item response theory analyses. J Pers Assess. 2013; 95(5):523-9. DOI: 10.1080/00223891.2013.781029. View

Meredith W . Two Wrongs May Not Make a Right. Multivariate Behav Res. 2016; 30(1):89-94. DOI: 10.1207/s15327906mbr3001_8. View

10.

Lake B . Concept of ego strength in psychotherapy. Br J Psychiatry. 1985; 147:471-8. DOI: 10.1192/bjp.147.5.471. View

11.

Scheier M, Carver C, Bridges M . Distinguishing optimism from neuroticism (and trait anxiety, self-mastery, and self-esteem): a reevaluation of the Life Orientation Test. J Pers Soc Psychol. 1994; 67(6):1063-78. DOI: 10.1037//0022-3514.67.6.1063. View

12.

Scheier M, Carver C . Optimism, coping, and health: assessment and implications of generalized outcome expectancies. Health Psychol. 1985; 4(3):219-47. DOI: 10.1037//0278-6133.4.3.219. View

13.

Stern B, Caligor E, Clarkin J, Critchfield K, Horz S, MacCornack V . Structured Interview of Personality Organization (STIPO): preliminary psychometrics in a clinical sample. J Pers Assess. 2009; 92(1):35-44. DOI: 10.1080/00223890903379308. View

14.

Tangney J, Baumeister R, Boone A . High self-control predicts good adjustment, less pathology, better grades, and interpersonal success. J Pers. 2004; 72(2):271-324. DOI: 10.1111/j.0022-3506.2004.00263.x. View

15.

Campbell-Sills L, Stein M . Psychometric analysis and refinement of the Connor-davidson Resilience Scale (CD-RISC): Validation of a 10-item measure of resilience. J Trauma Stress. 2007; 20(6):1019-28. DOI: 10.1002/jts.20271. View

16.

Li C . The performance of ML, DWLS, and ULS estimation with robust corrections in structural equation models with ordinal variables. Psychol Methods. 2016; 21(3):369-87. DOI: 10.1037/met0000093. View

17.

Weinryb R, Rossel R, Asberg M . The Karolinska Psychodynamic Profile. I. Validity and dimensionality. Acta Psychiatr Scand. 1991; 83(1):64-72. DOI: 10.1111/j.1600-0447.1991.tb05513.x. View