Item analysis of the Teacher’s Gifted Rating Screening Scale

The present study aimed to add new evidence of construct validity of the Teacher’s Rating Giftedness Screening Scale. The analysis of its items, in relation to the adjustment indices to the Graduated Response Model, as well as to interpret the sense of the scales formed by the items.

Method:

The sample was composed of 666 students (64.7% males). The instrument consisted of 42 items that assess five areas (general intellectual abilities, leadership, creativity, specific academic abilities, and artistic talent), being answered by 224 teachers.

Results:

The results indicated that all items had infit/outfit adjustment indexes within the expected value, between 0.5 and 1.5. The factor accuracy, estimated by the graduated response model, varied between 0.74 to 0.85.

Conclusion:

The results allowed the elaboration of an interpretation proposal referenced in the item, as well as the identification of the most effective items in discriminating individuals with above average ability level.

Keywords:
Behavior rating scale; Educational measurement; Special educational needs; Special education

Programa de Pós-Graduação em Psicologia, Pontifícia Universidade Católica de Campinas Núcleo de Editoração SBI - Campus II, Av. John Boyd Dunlop, s/n. Prédio de Odontologia, 13060-900 Campinas - São Paulo Brasil, Tel./Fax: +55 19 3343-7223 - Campinas - SP - Brazil
E-mail: psychologicalstudies@puc-campinas.edu.br

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[1] Correspondence to: T. C. NAKANO. E-mail: <tatiananakano@hotmail.com>.

Area	Definition	Quantity of items
General intelectual capacity	Evaluates the teacher’s perception of the student’s verbal and non-verbal cognitive abilities, other abilities, and intellectual abilities. General abilities and competencies relate to the processing of information and solving problems, as well as a good memory, verbal ability, reasoning, and abstract thinking.	8
Specific academic ability	Essentially, it involves assessing the teacher’s perception of a student’s ability to handle specific subjects, whether in school or not. This term refers to a specific field and its prominence, such as mathematics, language, reading, and writing, among others.	9
Leadership	Measures a student’s ability to motivate others towards a common goal. It relates to the ability to stand out among classmates, understand social dynamics, exhibit strong interpersonal communication, lead, make decisions, resolve conflicts, and influence others.	8
Creativity	Examines the teacher’s perception of abilities related to thinking, acting, or producing unique, original, and imaginative ideas. It encompasses an original and imaginative approach to a variety of problems and situations, flexibility of thought, the range of ideas, imagination, and curiosity.	8
Artistic Talent	Analyzes a student’s potential or demonstrated abilities based on interests and talents in areas such as music, dance, art, theater, drawing, and painting.	9

Factor	Precision	Item	Difficulty	Infit	Outfit	Item-theta Correlation
General intelectual ability	0.85	CI2	0.37	1.04	1.04	0.85
		CI7	0.31	1.27	1.35	0.82
		CI8	0.23	1.27	1.27	0.82
		CI4	0.22	1.14	1.27	0.83
		CI6	-0.05	1.05	1.10	0.83
		CI5	-0.26	0.93	0.82	0.84
		CI3	-0.29	0.67	0.63	0.87
		CI1	-0.54	0.57	0.54	0.87
Academic Ability	0.75	HA4	0.78	1.38	1.40	0.72
		HA8	0.34	1.10	0.98	0.72
		HA3	0.10	1.16	1.10	0.68
		HA9	0.05	0.94	1.35	0.69
		HA7	0.03	1.04	0.97	0.70
		HA5	0.00	0.84	0.91	0.72
		HA6	-0.10	1.00	0.86	0.69
		HA2	-0.58	0.72	0.69	0.68
		HA1	-0.62	0.91	0.79	0.66
Creativity	0.74	CR8	0.49	1.29	1.22	0.72
		CR7	0.47	1.37	1.49	0.69
		CR5	0.28	0.95	1.10	0.73
		CR6	0.10	0.96	0.91	0.74
		CR3	-0.26	0.96	0.94	0.69
		CR1	-0.26	0.85	1.03	0.71
		CR2	-0.30	0.81	0.75	0.73
		CR4	-0.51	0.77	0.80	0.71

Fator	Accuracy	Item	Difficulty	Infit	Outfit	Item-theta correlation
Leadership	0.75	LI7	0.40	1.29	1.41	0.75
		LI6	0.38	0.81	0.83	0.83
		LI4	0.38	0.86	0.88	0.82
		LI2	0.09	1.12	1.13	0.78
		LI1	-0.14	0.93	0.95	0.80
		LI5	-0.25	0.88	0.85	0.79
		LI3	-0.29	1.07	0.98	0.77
		LI8	-0.56	1.03	1.01	0.76
Artistic Talent	0.81	TA8	1.50	1.14	0.98	0.77
		TA6	0.89	1.29	1.28	0.73
		TA4	-0.02	0.82	0.90	0.73
		TA5	-0.10	1.15	1.13	0.69
		TA9	-0.32	0.86	0.76	0.72
		TA2	-0.35	0.92	0.89	0.71
		TA3	-0.38	0.90	0.81	0.71
		TA1	-0.55	1.04	1.13	0.68
		TA7	-0,67	1.14	1.02	0.66