First, best of luck with your return to the academic world. Don't take any criticism I offer here personally . . . I am just giving my impressions.
You start off with an awful lot of questions. I thought that it was the prompt I was reading at first. When you begin with so many questions, you are allowing the reader to come up with their own answers. With a persuasive essay, you don't want the reader forming opinions before you have even started. Tell the reader what you think, support your opinion, offer up what the opposition says, refute or deflate the opposition's position, then reiterate your own opinion. Bring the reader to your side.
Persuade the reader.
Although some believe there to be hundreds, and some believe there to be none, I will point out three major negative impacts that I see that a mothers working has on her child (ren).
This sentence is awkward. Generally speaking, you won't use the first or second person in an essay. Think about the way you see newspaper and magazine articles . . . the writers don't use the word "I" or "we" (unless it is a humor or editorial piece). The "child (ren)" is awkward as well. It would be best to reword a sentence like that so that you didn't need to include any oddly-formatted words. "A mothers working" should have an apostrophe, but I am not going to get too nitty gritty on the grammar when some rewriting is in order.
Extensive research and data collection points to an agreement that a child's behavior, a child's learning capabilities, and a child's development and fostering of peer relationships are all negatively affected by his or her mother's working outside of the home.
I know that Simone has already commented on this sentence, but I wanted to point something else out to you that has more to do with style than content. The use of "a child's" gets repetitive here and adds unnecessary words. This sentence could be rewritten to something like: Research indicates that children's behavior, learning capabilities, development, and fostering of peer relationships are negatively affected by mothers working outside of the home.
Your second paragraph starts out pretty weak. Remember that you want to persuade people to your side . . . not offend them if they are a working mother, have a working mother, or are married to a working mother. There's a big difference between being an involved and attentive parent and a disinterested parent, but whether or not a mother works isn't necessarily a indication of her level of involvement with her children. A parent who stays home and parks a kid in front of Barney all day can spend less time engaged with a child than a working mom who is home by 3:30 (I made my mom in this scenario a teacher for argument's sake) and then spends the next five hours before bedtime actively engaged with her child. Many people do see work as stressing, but others find enjoyment in their chosen occupation. My mom is a professional photographer and is happiest when she is on a shoot. Instead of enervating her, my mom's work invigorates her. Honestly, I don't think she would be the same person or have the same vitality if she were just a domestic servant with my brother and me in charge. Perhaps if you softened the blow by acknowledging that working is not a black and white decision, you would be able to put your reader off of the defensive and keep them reading along.
(Daniels and Moos, 1988; Grossman, Pollack, and Golding, 1988; Piotrkowski and Katz, 1983; Repetti, 1987).
Are these sources that you haven't yet included in your bibliography? I am confused.
these parents', who are authoritative
I have noticed some issues with apostrophes in your writing. There are times when you need one and don't use it and other times when there are there without serving a purpose. Here are a couple of links to help you refresh apostrophe use:
grammarbook.com/punctuation/apostro.asp
owl.english.purdue.edu/owl/resource/621/01/
family "unit".
The punctuation goes inside quotation marks.
to complete the not so immediate situations.
They aren't completing the situations . . . to contend with not-so-immediate situations.
Studies show that the sooner a mother goes to work after giving birth
[,] the greater the likelihood of those children not doing as well in school-readiness testing when they are
three years old. I am still not crazy about this sentence, but I am not sure how to fix it.
their counterparts
[,] "
r eported Jeanne Brooks-Gun
Also in other studies, it's been proven that those negative effects of early full time maternal employment persist among children who are 7 or 8 years old (Lewin, T).
Other studies show that negative effects of early, full-time maternal employment persist among seven and eight-year old children.
No one will do the job of nurturing and upbringing with the same level of commitment and investment as one's own mother.
No one? What about the dad? The grandmother? What if the mother is addicted meth? This is a broad statement. As a reader, I found myself trying to conjure exceptions instead of being persuaded.
I am going to stop there. You have probably had enough of me by now anyway. I will either wait for a rewrite or let someone else pick up the last couple of paragraphs.