Hypothesis writing

IB Psychology: Hypothesis writing

Students often struggle with writing good hypotheses. HL candidates must be able to write two types of hypotheses: a null hypothesis, which states that there will be no relationship between the independent and dependent variable, and the alternative hypothesis (aka the research hypothesis) which clearly predicts the relationship between the independent and dependent variable.The purpose of this activity is to have students...


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Comments 4

Nikki Rotkosky 19 January 2018 - 19:30

Hi John , Could you please clarify something: By definition a null hypothesis is a hypothesis that says there is no statistical significance between the two variables. According to the new textbook the null is, "...opposite to the operationalized research hypothesis." This is not exactly true and it is throwing students off. It continues to read that there will be no difference but how shall I clarify that to students? It isn't an opposite. As always thank you for your help, Confused :)

John Crane 20 January 2018 - 06:01

Dear Nikki, I am not sure what you are referring to. I have checked my online textbook and do not see that error. Could you tell me exactly where you see that?

Nikki Rotkosky 22 January 2018 - 21:02

page 494 of the Oxford IB book.

John Crane 23 January 2018 - 04:45

I know nothing about the new OUP textbook. I wasn't involved with is and I don't yet have a copy. To me, that is clearly an error. You should let the kids know that it is and teach them a correct definition.


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