@NewYorker To motivate, a #game must be optimally frustrating, not be too easy or too difficult. http://www.drstanleygoldstein.com/through_children_s_minds__the_marketing_and_creation_of_children_s_products_120153.htm …
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.