Toxic sugar Essay Example | Topics and Well Written Essays - 500 words

Toxic sugar - Essay Example Maturation effect, changes in research participants’ responses following numerous exposure to the study’s instrument is another major confound to the study (Goodwin, 2009). The study could be improved through implementing an experimental design over a short period. the design would randomly select research paericipants and organize them into strata with standard conditions. One group, a control group, would refrain from fruit consumption while each of the remaining groups would be subjected to single types of fruits and data collected, and tests performed, to determine incidence rates of type 2 diabetes among the participants (Muraki et. al., 2013). The researchers conducted the research themselves. Even though participant administered questionnaires were used, significant involvement in determination of participants’ consumption levels justifies the researchers’ role. Researchers’ participation in a research matter because it establishes grounds for evaluating reliability threats due to researchers’ bias. Not involvement communicates higher level reliability of a study. The researchers studies human subjects, people identified as women and men. The large number of participants used in the study, 66105 women, 36173 men and 85104 other women, was sufficient though there was no treatment. This means absence of placebo and treatment groups. Researchers in the study considered a 25 year period in which data was collected for different research participants. The period began in the year 1984 and ended in the year 2009 and was long enough for a longitudinal study (Muraki et. al., 2013).). The study was not a controlled experiment because its feature does not meen definition of a controlled experiments. Controlled experiments involved randomization of a study’s participants into groups that receive different treatments, characteristics that did not exist in