Abstract
The Theory of Mind Inventory-2 (ToMI-2) is a promising measure for assessing theory of mind (ToM) and social-related functions. However, limited evidence on its factorial validity hampers score interpretation. To examine the factorial validity, confirmatory factor analysis for two currently-available structures was performed in 420 typically developing children aged three to seven years. One, the development-based structure, contains three stages of ToM development: the early, basic, and advanced ToM stages. The other, the social-related structure, comprises three social-related ToM functions: emotion recognition, mental state term comprehension, and pragmatics. The results showed that these structures and the unidimensionality of each domain were not supported even after modifications. Thus, further revisions and examinations of the underlying structures of the ToMI-2 are needed.
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This work was supported by the Ministry of Science and Technology (MOST 110-2628-B-006-031, MOST 109-2628-B-006-023, and MOST 109-2811-B-006-517).
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Shih-Chieh Lee and Kuan-Lin Chen designed the study and wrote the study protocol. I-Ning Fu, Meng-Ru Liu, and Kuan-Lin Chen conducted the data collection. Shih-Chieh Lee performed the data analysis and wrote the first draft of this manuscript. I-Ning Fu, Meng-Ru Liu, Tzu-Ying Yu, and Kuan-Lin Chen provided substantial comments and edited the draft to achieve the final manuscript. All authors contributed to the manuscript and approved the final manuscript.
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Appendix 1 Brief Description and Domain Structures of the ToMI-2 Items
Appendix 1 Brief Description and Domain Structures of the ToMI-2 Items
No | Brief description of the item | Developmental-based structure | Social-related structure |
---|---|---|---|
3 | Early empathy | Early | Not included |
6 | Discrimination of basic emotions | Early | ER |
24 | Intentionality | Early | Not included |
25 | Basic positive emotion recognition (happy) | Early | ER |
28 | Social referencing: reading fear | Early | Not included |
37 | Sharing attention: initiating | Early | Not included |
38 | Sharing attention: responding | Early | Not included |
43 | Gaze following | Early | Not included |
44 | Social referencing: ambiguous situation | Early | Not included |
48 | Basic negative emotion recognition (sad) | Early | ER |
49 | Basic negative emotion recognition (mad) | Early | ER |
50 | Basic negative emotion recognition (scared) | Early | ER |
54 | Mental state term comprehension: early desire (want) | Early | MSC |
1 | Physiologically-based behavior | Basic | Not included |
4 | Emotion-based behavior | Basic | Not included |
7 | Mental state term comprehension: cognitive terms (think) | Basic | MSC |
8 | False beliefs: unexpected location | Basic | Not included |
9 | Seeing leads to knowing | Basic | Not included |
10 | Mental state term comprehension: cognitive terms (know) | Basic | MSC |
11 | Appearance-reality distinction | Basic | Not included |
12 | False beliefs: unexpected contents | Basic | Not included |
15 | Certainty | Basic | Not included |
16 | Mental-physical distinction | Basic | Not included |
26 | Pretense: engaging in pretense | Basic | Not included |
29 | Counterfactual reasoning | Basic | Not included |
30 | Pretense: understanding pretense in others | Basic | Not included |
31 | Child’s ability to deceive | Basic | Not included |
32 | Cognitive emotion recognition (disgust) | Basic | ER |
33 | Speech acts: performatives (promises) | Basic | MSC |
35 | Pragmatics: secrets | Basic | PRAG |
39 | Mental state term comprehension: cognitive terms (belief) | Basic | MSC |
42 | Attribute-based behavior | Basic | Not included |
51 | Cognitive emotion recognition (surprise) | Basic | ER |
53 | Mental state term comprehension: desire (need) | Basic | MSC |
57 | Future thinking (self) | Basic | Not included |
2 | Pragmatics: sarcasm | Advanced | PRAG |
5 | Second-order false desire attribution | Advanced | Not included |
13 | Pragmatics: idiomatic language | Advanced | PRAG |
14 | Pragmatics: deception by others | Advanced | PRAG |
17 | Emotion recognition: display rules | Advanced | ER |
18 | Pragmatics: complex social judgment | Advanced | PRAG |
19 | Pragmatics: white lies | Advanced | PRAG |
20 | Pragmatics: lies versus jokes | Advanced | PRAG |
21 | Visual perspective-taking (level 2) | Advanced | Not included |
22 | Second-order understanding of belief | Advanced | Not included |
23 | Second-order understanding of emotion | Advanced | Not included |
27 | Complex social judgment | Advanced | Not included |
34 | Empathy | Advanced | Not included |
36 | Pragmatics: humor (play on words) | Advanced | PRAG |
40 | Mind as active interpreter: biased cognition | Advanced | Not included |
41 | Mind as active interpreter: ambiguous figure perception | Advanced | Not included |
45 | Pragmatics: audience adaptation | Advanced | PRAG |
46 | Conflicting emotions | Advanced | Not included |
47 | Folk (commonsense) psychology | Advanced | Not included |
52 | Complex emotion recognition (embarrassed) | Advanced | ER |
55 | Complex emotion recognition (guilt) | Advanced | ER |
56 | Autonoetic (self-knowing) awareness | Advanced | Not included |
58 | Mental state inference in context | Advanced | Not included |
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Lee, SC., Fu, IN., Liu, MR. et al. Factorial Validity of the Theory of Mind Inventory-2 in Typically Developing Children. J Autism Dev Disord 53, 310–318 (2023). https://doi.org/10.1007/s10803-022-05426-0
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DOI: https://doi.org/10.1007/s10803-022-05426-0