His main study was one of the simplest of all: what controls the division of a cell from one to two to four to eight.
The main study was conducted between June and September 2014.
The main study was conducted over a twelve-month period with cross-over at six months.
One of these teachers taught the control and experimental groups at the high school where the main study was conducted.
The main study was administered in the language lab by another research collaborator on April 14 , 2014 1 month after the pilot study.
Before the main study was carried out, a small scale pilot study was conducted to explore the approaches to participant recruitment, data collection and data analysis.
The main study was conducted in four Regions of Ethiopia: the mostly urban populations in Addis Ababa and its environs and rural populations of selected districts from Oromia, Amhara and South Nations Nationalities and People's Regions States (SNNPRS).
We recognized that validation would ideally have been performed in a sample from the population in which the main study was to be conducted, but not all ideals are realisable in current-day Pakistan.
The main study was carried out with Ni, but impurity cations present in the system, particularly Zn, had to be examined in addition due to their competitive effects on Ni sorption.
Although the main study was conducted online, we carried out a pilot study in advance to test and modify the study interface (e.g., autoplay of the sound and phrasing of the questions) and generate ground truth human labels for quality control of the online study (details see the next section).
Our main study was based on a familial design, presenting two major advantages.
