Question

I have to write an argument in standard form before writing an essay on it. I'm using an article written by Jenny Price on news.wisc titled "Facebook profiles raise users' self-esteem and affect behavior"
And here's what I have for the standard form, I just need to know if it makes any sense because I'm not sure about it at all, especially the conclusion:

1) Facebook profiles create an ideal version of self to show society
2) An ideal version of self creates a higher self-esteem
3) Self-esteem boosts are accompanied by a lower level of motivation
4) ∴ Facebook contributes to a lower motivation level
5)Motivation is needed to complete basic tasks.
∴ Facebook results in lower productivity