Table 4 Item fit and item parameter estimates for identity scales—engineering

Scales

Item ID

S_X2*

df

RMSEA

a

b1

b2

b3

Competence

Comp1

19.62

15

.040

1.700

− 2.012

− 0.779

1.076

Comp2

10.75

10

.020

1.818

− 2.710

− 1.744

0.217

Comp3

13.75

14

.000

1.358

− 2.282

− 0.435

1.979

Comp4

16.60

12

.045

1.647

− 2.812

− 1.454

0.497

Comp5

10.45

11

.000

1.884

− 2.401

− 1.428

0.641

Comp6

7.97

11

.000

1.943

− 2.904

− 1.555

0.484

Comp7

12.93

11

.030

1.827

− 2.976

− 1.695

0.451

Interest

Int1

9.96

12

.000

2.015

− 2.499

− 1.362

− 0.117

Int2

15.54

11

.048

1.943

− 2.775

− 1.669

− 0.122

Int3

17.01

11

.055

2.010

− 2.348

− 1.663

0.117

Int4

9.51

10

.000

1.723

− 1.813

− 0.444

0.729

Int5

11.19

9

.037

3.968

− 1.994

− 1.128

0.187

Int6

14.88

6

.091

3.970

− 2.263

− 1.468

− 0.244

Int7

4.54

8

.000

2.212

− 1.834

− 1.148

0.425

Self-recognition

Self1

18.19

14

.041

2.703

− 1.035

− 0.165

1.021

Self2

16.72

13

.040

2.623

− 1.866

− 0.486

0.57

Self3

14.73

12

.036

3.700

− 0.885

0.265

1.069

Self4

4.57

8

.000

5.216

− 0.821

0.188

1.002

Self5

10.30

13

.000

3.829

− 0.68

0.164

0.928

Self6

12.74

17

.000

2.387

− 1.358

− 0.482

0.669

Recognition by others

Oth1

18.00

19

.000

1.789

− 1.474

− 0.268

1.107

Oth2

10.57

12

.000

4.183

− 0.613

0.321

1.140

Oth3

12.40

13

.000

3.519

− 0.81

0.018

0.857

Oth4

34.46

17

.076

1.884

− 1.391

− 0.146

1.076

Oth5

21.93

13

.062

3.026

− 0.968

− 0.157

1.122

Oth6

13.95

11

.039

3.396

− 0.676

0.338

1.467