Essay topics: Argument: recent study of eighteen rhesus monkeys provides clues as to the effects of birth order on an individual's levels of stimulation. The study showed that in stimulating situations (such as an encounter with an unfamiliar monkey), firstborn infant monkeys produce upto twice as much of the hormone cortisol, which primes the body for increased activity levels, as do their younger siblings. Firstborn humans also produce relatively high levels of cortisol in stimulating situations (such as the return of a parent after an absence). The study also found that during pregnancy, first-time mother monkeys had higher levels of cortisol than did those who had had several offspring.
The author of the letter introduction a investigate result which perhaps reveal impact of birth order on an individual's levels of stimulation. To support the claim, the author cites three examples about the firstborn infant,firstborn humans and first-time mother monkey sequentially to prove that a positive relationship may be exists with birth order and the level of the hormone cortiso. Close scrutiny of each of the evidence, however, none of them is credible.
First at all, as for the first example, producing twice as much of the hormone cortisol doesn't indicate that there is a relation with birth order and the level of hormone,perhaps it may be caused by other factors such as gender:as I know,monkeys of different gender will have different level of hormone even if they share the same circumstance. According to it,there is a flaw in the research that it doesn't remind gender and so that they can't rule out a following situation that all the first infant monkeys in experiment are female who will actually secrete more hormones. Even if they are not first infant,they can also produce the highest level of hormones. In short, the factors that have impact on the level of stimulation may be monkey's gender rather than birth order.
Second, about the firstborn humans, the experiment is also not credible.It's entirely possible that the firstborn infant doesn't have playmates at home, so parents are their only friends. After a period time doesn't see their parents, they will be so excited and then produce more hormones when parents come home. On the contrast, as for the later born infant, they use to play with their sisters or brothers,so maybe they don't mind whether their parents are at home or not.
Third, about the last experiment, the author assume unfairly that first-time mother monkeys who have higher levels of hormone will delivery an infant monkey that also have relatively more hormone. However, the author use no evidence to support the assumption.Lacking such evidence it is equally possible that the hormone level of mothers don't influence the offspring's. Thus, the author 's claim is not credible.
In sum, all these three examples can't attest the relationship with birth order and the level of hormone of cortiso.The results from the experiments may be influent by other factors,such as gender. So to strength the claim, the author should rule out all other possible factors.
|Post date||Users||Rates||More about the essay|
|1 week 2 days ago||Pallavi Sapkale||50||Read full essay|
|1 week 6 days ago||bonnytalon||66||Read full essay|
|2 weeks 2 days ago||Phoebe||50||Read full essay|
|2 weeks 5 days ago||abhijit5oct||62||Read full essay|
|3 weeks 1 day ago||amirbahman||58||Read full essay|
|4 weeks 23 hours ago||sharmasaugat2012||50||Read full essay|
|1 month 18 min ago||amir_ow||50||Read full essay|
|1 month 3 days ago||sarvesh1992||50||Read full essay|
|1 month 1 week ago||laukikkarnavat||50||Read full essay|
|1 month 3 weeks ago||ash94810||50||Read full essay|
- The effectiveness of a country's leaders is best measured by examining the well-being of that country's citizens. (54.4444)
- The following appeared in a memo at XYZ company."When XYZ lays off employees, it pays Delany Personnel Firm to offer those employees assistance in creating résumés and developing interviewing skills, if they so desire. Laid-off employees have benefited gr (80)
- The vice president of human resources at Climpson Industries sent the following recommendation to the company's president."In an effort to improve our employees' productivity, we should implement electronic monitoring of employees' Internet use from their (40)
- The most effective way to understand contemporary culture is to analyze the trends of its youth. (69)
- The surest indicator of a great nation is represented not by the achievements of its rulers, artists, or scientists, but by the general welfare of its people. (48.6667)
- The following is taken from a memo from the advertising director of the Super Screen Movie Production Company."According to a recent report from our marketing department, during the past year, fewer people attended Super Screen-produced movies than in any (57.5)
- Politicians should pursue common ground and reasonable consensus rather than elusive ideals (54.090899999999998)
- 63The following recommendation was made by the president and administrative staff of Grove College, a private institution, to the college's governing committee."We recommend that Grove College preserve its century-old tradition of all-female education rat (70)
- argument：The following appeared in the summary of a study on headaches suffered by the residents of Mentia.A recently issued twenty-year study on headaches suffered by the residents of Mentia investigated the possible therapeutic effect of consuming salic (65)
- Claim: Colleges and universities should specify all required courses and eliminate elective courses in order to provide clear guidance for students.Reason: College students—like people in general—prefer to follow directions rather than make their own deci (54)