Question 1
What type of distribution refers to a situation in which the majority of participants score highly on the measure on which they are assessed?
A bimodal
B negatively skewed
C normal
D positively skewed
[1]
Answer
What type of distribution refers to a situation in which the majority of participants score highly on the measure on which they are assessed?
A bimodal
B negatively skewed
C normal
D positively skewed
[1]
Which of these best describes what a ‘Type 2’ error refers to?
A incorrectly accepting the null hypothesis
B incorrectly rejecting the null hypothesis
C use of the incorrect inferential statistical test
D use of the incorrect tables of critical values
[1]
When would it be best to use the median rather than the mean?
A when there are a few scores much lower than the rest
B when there are a few scores very similar to each other
C when there is a large number of scores overall
D when there is a small number of scores overall
[1]
Which of these inferential statistical tests is the only one that does not involve ranking of the data at some stage?
A Chi-square
B Mann Whitney U test
C Spearman’s Rho
D Wilcoxon Signed Ranks test
[1]
A study investigating the difference in aggression between boys and girls recorded the number of times a child shouted at someone during playtime. Which of the following would be the appropriate inferential test to use to analyse the data from this study?
A Binomial sign test
B Chi-square
C Mann Whitney U test
D Wilcoxon Signed Ranks test
[1]
Which symbol in statistics means ‘approximately’?
A
B <
C ~
D
[1]
What type of validity refers to the extent to which the scores on one measure are able to predict the outcome on another related measure?
A criterion
B ecological
C face
D population
[1]
Which of these is the name of an interviewing technique where the researcher has no pre-planned questions?
A free form
B open
C unplanned
D unstructured
[1]
For which of the following would it be appropriate to use a line graph to display the data?
A differences in the ability of males and females to identify six emotions displayed on the face
B number of acts of aggression displayed by boys and girls
C preference for four different learning styles displayed as percentages
D self-ratings of aggression (1 to 10) at different times of day (10am to 10pm)
[1]
In the study by Simons and Chabris investigating inattentional blindness, how was the dependent variable operationalised?
A detection of ‘gorilla’
B duration of video clip played
C estimation of number of players present
D number of passes of basketball counted
[1]
In the study by Baron-Cohen et al., what sampling technique was used to obtain the high functioning adults with autism (HFA)?
A opportunity
B self-selected
C snowball
D random
[1]
What fraction is represented by the decimal 0.05?
[1]
Which of the calculated values from a Spearman’s Rho test best reflect the correlation displayed
A rs = +0.2
B rs = +0.8
C rs = –0.2
D rs = –0.8
[1]
Which of these is the name of a section of the write-up of a practical report that provides a summary of the research conducted?
A abject
B ablate
C absinth
D abstract
[1]
What name is given to the type of data collected directly by the researchers?
A preliminary
B precursor
C principal
D primary
[1]
What type of data is displayed in a histogram?
A anomalous
B continuous
C nominal
D ranked
[1]
Which is true of a field experiment?
A has an independent variable
B has an independent variable that cannot be manipulated
C has an independent variable that is always naturally occurring
D has no independent variable
[1]
Which is true of a naturalistic observation?
A always conducted in an outdoor location
B conducted in a place where the behaviour studied usually occurs
C has a naturally occurring independent variable
D has data collected by someone who is part of the research team
[1]
What is a coding frame?
A a technique that enables qualitative data to be recorded as quantitative
B a technique that enables quantitative data to be recorded as qualitative
C a technique that enables ordinal data to be recorded as nominal
D a technique that enables interval data to be recorded as nominal
[1]
What does the term ‘representativeness’ refer to?
A the extent to which the findings can be applied to everyday life
B the extent to which the findings can be applied to other related research
C the extent to which the findings can be applied to the population
D the extent to which the findings can be applied to the sample
[1]
Weigh more outgoing?
Some research suggests that personality is linked to a person’s body type (their structure and weight), with larger people having a more extrovert (lively and outgoing) personality than those who are smaller. To investigate this further, a psychologist wants to use the correlation technique to examine the relationship between weight and extroversion.
21 Write an alternative one-tailed hypothesis for this study.
[3]
22* Explain how you would conduct a study using the correlation technique to investigate if there is a relationship between a person’s weight and their level of extroversion. Justify your decisions as part of your explanation. You must refer to:
• the sampling technique to obtain participants for the study
• how you would operationalise the variable ‘extroversion’
• details of how one ethical consideration would be addressed
• the control of one extraneous variable.
You should use your own experience of practical activities to inform your response.
[15]
Outline how you could obtain secondary data to use as the measurement of the variable ‘weight’.
[3]
Outline one strength of the use of secondary data in this study.
[3]
Outline one weakness of having quantitative data in this study.
[3]
Suggest one open question that could provide additional information in the form of qualitative data for use in this study.
[2]
Outline one strength of having some qualitative data in this study.
[3]
Explain one way that the design of this study could increase the generalisability of the findings from this study.
[3]
Steps to increase bin use
Research suggests that, when trying to encourage people to change their behaviour in some way, ‘telling people what to do’ is not always effective and a more subtle approach may be better (‘nudge theory’). To investigate this, a psychologist conducted an observation study monitoring people’s use of two different types of litter bin situated close to each other in the pedestrian area of one large town centre – one that had steps printed on the pavement leading up to it and another without the steps. Recordings were made each time any item was deposited in the bin throughout a continuous period from 10am to 2pm. The data on how many people used the bins is presented in the table below.
| Table showing the number of times each bin was used by males and females | ||
| Males | Females | |
| Bin with steps | 9 | 14 |
| Bin without steps | 5 | 12 |
27 Draw a fully labelled bar chart showing the overall use of the two different types of bin.
[4]
Calculate the percentage of people who used the bin with steps leading up to it. Show your workings and present your finding to two significant figures.
[3]
Outline two conclusions that can be obtained from the data collected in this study.
[6]
[2]
Calculate the degrees of freedom for use with the Chi-square test in this study. Show your workings.
[2]
[1]
The psychologist obtained a calculated value of 0.4058 after analysing the data with the Chi-square test. Write a significance statement presenting this finding showing if the results are significant at the 5% level of probability or not.
[3]
What does the analysis from the Chi-square test inform us regarding the use of the two different types of bin from this study?
[3]
Outline one strength of the use of the nominal data collected in this study.
[3]
Outline one weakness of the use of the nominal data collected in this study.
[3]
Explain what it would mean if there was a ‘Type 1 error’ in this study.
[2]
Outline one weakness of the use of event sampling to record the data in this study.
[3]
The paper as printed
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