Aims + Hypotheses

what should an aim always start with?

to see whether/to investigate whether

“to see whether caffeine consumption affects memory performance”

make this into a directional hypothesis

participants who consume 200mg of caffeine will recall more words from a memory test than participants who consume 0mg of caffeine

“to investigate whether the amount of sleep affects reaction time”

make this into an alternative/non-directional hypothesis

there will be a significant difference in reaction time between participants who sleep for 8 hours and those who sleep for 4 hours

“to investigate whether the size of an audience affects performance on a task”

make this into a null hypothesis

there will be no significant difference in task completion time between participants performing in front of 50 people and those performing in front of 5 people