Table 1 Overview of the main data and characteristics of the participants, collected by means of the background questionnaire: gender (G), age (A), computer expertise (CE), previously used software (PUS) [options: Internet, Email, Word Processor, Spread_sheet, Multimedia, Accounting & management, Databases, social Networks, Others], Kitchen Design Software Knowledge (KDSK), Tablets and Smartphones Expertise (TSE), Task Domain Knowledge (TDK), Academic Studies Level (ASL) ranged from 0 to 3 [0: No studies; 1: Primary school; 2: Secondary school; 3: University], and Other Relevant Knowledge (ORK). The final CE of each participant was confirmed with all these items

M/F

[0..5]

[I, E, W, S, M, A, D, N ,O]

[0..4]

[0..4]

[0..3]

1

F

51

0

No

1

3

1

2

F

48

0

No

1

3

1

3

F

48

0

I

No

1

3

1

4

M

12

0

I

No

2

1

0

5

F

42

1

I, E

No

2

3

1

6

F

50

1

I, M

No

2

3

2

7

M

24

1

I, M, O

No

2

2

1

Occasional use of IKEA kitchen design app

8

F

46

2

I, E, W, S, M, A (forgotten)

No

2

3

2

Forgotten computer

courses

9

F

44

2

I, E, W, M, N, O

No

2

3

1

10

F

50

2

I, E, W, M, O

No

2

3

1

Medical software

11

F

40

2

I, E, W, M, O

No

2

3

3

Medical software

12

M

52

2

I, E, W, S, M, O (forgotten)

No

2

3

1

Pantograph.

forgotten computer courses

13

M

43

2

I, E, W, M, A, N, O

No

2

2

1

Photoshop

14

F

35

3

I, E, W, S, M, A, D

No

2

3

2

15

M

43

3

I, E, W, S, M, A, D, O

No

2

2

3

Veterinary software

16

M

50

3

I, E, W, M, O

No

2

3

1

AutoCAD and

Presto user

17

F

43

3

I, E, W, S, M, A, D, O

No

1

3

2

Forgotten computer courses

18

M

52

3

I, E, W, S, M, A, D, O

No

2

3

2

19

M

52

3

I, E, W, S, M, A, O

Kitchens

3

4

2

Photoshop Kitchen design professional

20

F

52

3

I, E, W, S, M, O

Kitchens

2

4

1

Kitchen design

professional