• IEQC2-PSC2: the visual concerned extrovert

The visual concerned extrovert profile is the largest profile size consisting of 64 students (15%), of which 41% of them are male students and 59% are female students. They tended to feel relaxed while they were answering the questionnaire (35%). Regarding IEQ perception, the visual concerned extrovert students are the most dissatisfied with air smell (63%) in their most used study places. However, view to the outside (8.9) and daylight (8.8) are the highest important IEQ preference aspects for these students. Pertaining to the IEQ-related items, these students are the least concerned with personal desk ventilation and fresh air (5.5). Furthermore, they rated the lowest importance scores for the IEQrelated items control of shading (6.2) and control of room temperature (6.3). On the other hand, they are the second profile that scored a high importance score for headphones (7.7). In terms of psychosocial preferences, this profile is the least concerned with privacy (5.9). However, it is the second highest profile that is concerned with the presence and company of others (6.5).

• IEQC2-PSC3: the visual concerned non-perfectionist

The visual concerned non-perfectionist profile comprises 48 students (11%), in which the reported percentages of male and female students (40% and 58%, respectively) are similar to the visual concerned extravert profile. The visual concerned non-perfectionist students are the highest group that suffered from anxiety (31%). With regards to IEQ preferences, they rated the lowest importance for sounds from the outside (4.3), smells (4.3), sounds from the inside (5.0), artificial light (5.5), and temperature (7.6) among the other profiles. However, these students scored high importance levels for the view to the outside (9.2) and daylight (9.0) Furthermore, they rated the lowest importance for two IEQ-related items which are control of room sounds (5.0) and control of room ventilation (6.0). However, personal desk ventilation and fresh air (7.1) is the highest important IEQ-related item for this profile. Pertaining to psychosocial preferences, this profile rated the lowest importance for chair type (5.7). Although the amenities (7.4) aspect was scored the lowest importance level by the visual concerned non-perfectionist students, it was considered the highest important psychosocial aspect.

#### 3.4.3. Overlap between IEQC3 with Psychosocial Clusters

The overlap between the IEQC3 and the three psychosocial clusters resulted in three profiles: IEQC3-PSC1: the unconcerned introvert; the unconcerned extrovert; and the unconcerned non-perfectionist.
