n late 2008 consumption and investment spending sharply declined in Canada because of the spread of the global financial crisis. . To the extent the drop in investment spending affected productivity multiple choice 2 it could have either shifted AS left (if productivity dropped) or slowed the rightward movement of AS. it could have either shifted AS right (if productivity dropped) or slowed the leftward movement of AS. it could have either shifted AD left (if productivity dropped) or slowed the rightward movement of AD. it could have either shifted AD right (if productivity dropped) or slowed the leftward movement of AD