I need supporting evidence for the below please:
-Not everyone would provide assistance to others if it meant risking their jobs.
-Few siblings would spend hours travelling to visit their brother every other weekend.
If you simply add "There are many reasons why..." to your statements, they become much easier to prove and support.
These are not exactly facts you are presenting, as yet, but could easily become factually supportable if you expand your statements to include this phrase.
Regarding the first statement that not everyone would assist a fellow employee if doing so would endanger his or her own positions at work, there have been articles published on such a subject. Surveys have been taken asking employees their course of action given certain situations. People magazine, Time, Newsweek, and others often feature surveys on such topics. Even Gentlemen's Quarterlyhas had a work-related article, "How to Fail Upwards." So check such sources.
I agree that hard evidence for this would be hard to find. Instead, you are looking at simply trying to argue your point by offering your reasoning for holding the views which you do. Given that your statements are personal and subjective, it will be very hard to convince those who do not share your views on each of the subjects.
I agree with the first more than the second, if I am honest, but that is because the second statement is much more general and less specific. I think you are right with the first statement, because at the end of the day, everybody does tend to think about themselves and their position first before going on to think about whether they can help others or not. If there was a risk of them losing their job, they would seriously question whether to support a colleague or not.
There might not be direct evidence to support your points, but you can back these points up by analogy. If you look at thing like charitable giving or what the average person does about poverty, then you might be able to gauge things like sacrifice. There might be some psychological experiments that show that self-preservation is one of the most important factors in humanity. Going this route, you might have some more evidence, otherwise you are left with anecdotal points.
I like the idea of you constructing a survey and asking classmates to give anonymous responses. If you use others who are in 11th grade and focus on the first of your questions, you'll probably be reaching lots of classmates who are in their first or second job situations. Could make for some really interesting research.
I agree with pohnpei that it will probably be difficult to find hard, solid data to support these assertions. You may want to do some searching on Google and/or Google books on topics such as "estrangement within families." Another approach would be to conduct some polls or interviews on your own. For instance, you might ask a teacher if you could distribute a list of questions in a class and have the students answer the questions anonymously. At least then you would have some kind of statistical data to support your claims.
I think it will be very difficult for you to find concrete evidence to back these statements up. I do not think that there are many polls taken about how far you would travel to visit your brother every other weekend.
I suppose there are lots of anecdotal bits of evidence for the first of these. For example, the assistant coach at Penn State U who didn't do more to pursue the case of sexual abuse could be seen in this light. You could say he failed to help the victim because he was afraid of making wabes and losing his job.