Choose the correct answer for each question.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Diet affects health'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Sleep deprivation causes a deterioration in spelling ability'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Eating carrots affects vision at night'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Number of siblings is related to ability to socialise'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Having a dog promotes positive psychological well being'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Stress affects performance in sporting activities'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'The teacher/pupil ratio affects academic performance'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Drinking alcohol leads to a deterioration in visual acuity'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Vandalism rises with overcrowding'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Older people learn more slowly than younger people'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'More money is spent in the week before Christmas than the week after Christmas'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'There is a difference in the way in which fathers and mothers play with their children'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Boys are more likely than girls to be colour blind'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Five year olds are more egocentric than 10 year olds'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Watching tropical fish helps you to relax'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Anxiety affects the level of adrenalin in the blood'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Individuals are more likely to conform when in groups of 5 than when in pairs'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'There is a difference in the speed with which people react to visual and auditory stimuli'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Drugs affect memory'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Bulls will charge more often when presented with a red rag than when presented with a blue rag'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Aggressive children are more emotionally insecure'.
Would the following statement give rise to a directional or a non-directional hypothesis: 'Absence makes the heart grow fonder'.