The subjects were also asked to rate the opening of packs on a 5-
point likert scale, ranging from ‘easy’ to ‘impossible’ (Fig. 4). The
water bottle was rated as ‘easy’ by 24 participants (63% of sample),
with the tetra pack rated as ‘easy’ by 11 participants (58% of sample).
However, the cheese portion ratings were spread across the
categories, with only 4 participants (17% of sample) rating it as
‘easy’ to open, 9 participants (39%) rating it as ‘moderate’ and ‘very
difficult’ to open, and 9 participants (39%) unable to open the pack
and rating it as ‘impossible.’