1. She was an outdoorsy type with shiny make-up and a horse tail of medium blond hair sticked out at the back of her head. "medium blond hair sticked out" --> "medium blond hair that stuck out" 2. It may be that with experience a person learns to interpret, very rapidly, what he observes, or to draw inferences, or to do something based on deduction or induction from those those observances and his past experience. "observes, or to draw inferences" ----> "observes, to draw inferences" "from those those observances and" ----> "from those observations and" 3. The developmental psychologist Karen Wynn has recently shown that five-months-old babies can do a simple form of mental arithmetic. "psychologist Karen Wynn has" ----> "psychologist, Karen Wynn, has" "five-months-old" ----> "five-month-old" Sorry, I couldn't use colours on this, hope it's not too confusing. Your sentences were really good, with the mistakes only being small :)

1) "... with a horse-tail of medium blonde hair sticking out from..." 2) "... that with experience, a person learns very rapidly to interpret what they observe, to draw inferences, or to do something based on deduction or induction from those observances and their past experiences." (this is a really confusing sentence. it's taken me ages to understand.) 3) "... shown that babies of five months old (or, 'five month old babies', but it's less formal)" i hope this helps. :)

sticked ------ sticking those those ---- (too many "those") five-months-old ----- five-month-old