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HYPOTHESES

HYPOTHESES. Null hypothesis (H 1 ) Alternative hypothesis (H 0 ) Direction of hypothesis: states the kind of difference or relationship between two conditions or two groups of participants

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HYPOTHESES

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  1. HYPOTHESES • Null hypothesis (H1) • Alternative hypothesis (H0) • Direction of hypothesis: states the kind of difference or relationship between two conditions or two groups of participants • One-tailed (directional): ‘people who study in silent surroundings achieve better than those who study in noisy surroundings’ • Two-tailed (no direction): ‘there is a difference between people who study in silent surroundings and those who study in noisy surroundings’

  2. OPERATIONALISING HYPOTHESES • Hypothesis: ‘people who study in quiet surroundings achieve better than those who study in noisy surroundings’ • What do ‘work better’, ‘quiet’ and ‘noisy’ mean? Define the operations: • ‘work better’ = obtain a higher score on the Wechsler Adult Intelligence Scale • ‘quiet’ = silence • ‘noisy’ = CD music playing • Operationalised hypothesis: ‘people who study in silence achieve a higher score on the Wechsler Adult Intelligence Scale than those who study with CD music playing’

  3. DIRECTIONAL AND NON-DIRECTIONAL HYPOTHESES Directional (one-tailed): People who do homework without the TV on produce better results than those who do homework with the TV on. Non-directional (two-tailed): There is a difference between work produced in noisy or silent conditions.

  4. INDEPENDENT AND DEPENDENT VARIABLES

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