Several studies have reported on students' difficulties in understanding the particle nature of matter (Harrison and Treagust, 2002), in particular the intrinsic motion of particles and their interaction with other particles (Novick and Nussbaum, 1978).
It found a function in the business world as well: Dana Gioia, the poet and former marketing executive who is now the chairman of the National Endowment for the Arts, recalls a 1985 usage by Sam Tune, a General Foods colleague, reporting on difficulties with nonstandard sizes of Kool-Aid, who sadly told his fellow executives, "This year our soft-drink distribution has been majorly cherry-picked".
Adolescents also reported on difficulties with interacting with family members, and avoiding interactions because they were difficult.
Parents used the term anxiety to describe the adolescents' experiences and reported on difficulties that adolescents had with the control of their emotions, mostly anger, in terms of temper outbursts.
Secondly, five items from the Quebec Pain Disability Scale were used, in which participants reported on difficulties with bending down to pick up lightweight objects, putting socks on either foot, getting in or out of the front seat of a car, standing for 2 hours, or sitting for 30 minutes because of back pain.
Evans has dismissed reports of difficulties on the show, including reports that he did not get along with LeBlanc – but now the show appears in need of further reinvention.
Some respondents had not considered the issue of Board membership or did not see representation at this level as necessary and others reported on difficulty finding someone with sufficient interest to commit the time for such a role.
Other research based on the same data looked at dietary effects on reports of difficulty falling asleep, staying asleep, non-restorative sleep and daytime drowsiness.
The BBC's Fergus Walsh reports on the difficulties facing the aid workers.
Lucy Williamson reports on the difficulties they face and what the new president can do to achieve her promised "economic democratisation".
