1.
An advantage of a Laboratory Experiment is:
Correct Answer
B. High level of control over variables means cause and effect relationships can be established
Explanation
The experimenter deliberately manipulates the IV, measures the DV, and has strict control over all other variables, meaning cause and effect relationships can be established.
2.
A Naturalistic (Quasi) Experiment is when...
Correct Answer
A. The IV studied is naturally occuring
Explanation
The IV studied is naturally occuring e.g. gender, genetic disorders. This allows researchers to investigate areas that would otherwise not be available to them.
3.
'The amount of sleep received before an exam will affect performance in that exam' is an example of a TWO tailed hypothesis.
Correct Answer
A. True
Explanation
The hypothesis does not predict the expected direction of the outcome but simply states that there will be a difference between the two events.
4.
A ________________ involves using different participants in each of the experimental conditions.
Correct Answer
C. Independent measures design
Explanation
Independent measures design involves using different participants in each of the experimental conditions. In this design, participants are randomly assigned to one of the experimental conditions, ensuring that each participant only participates in one condition. This allows for a comparison between groups and helps to control for individual differences. By using different participants, the design minimizes the potential confounding effects of individual variability, leading to more reliable and valid results.
5.
'There will be no significant difference between students' grades, whether they are male or female' is an example of...
Correct Answer
B. A null hypothesis
Explanation
A researcher always comes up with two hypotheses; a null and an alternate/experimental hypothesis. At the end of a null hypothesis, the researcher will always add 'Any difference will be due to chance.'
6.
A _______________ involves using the same group of participants in all experimental conditions in order to compare their performance in each condition.
Correct Answer
A. Repeated measures design
Explanation
A repeated measures design involves using the same group of participants in all experimental conditions in order to compare their performance in each condition. This design is useful when the researcher wants to minimize individual differences and control for participant variables that could confound the results. By using the same participants, any variations in performance can be attributed to the different conditions being tested rather than individual differences between participants. This design also increases statistical power as it requires fewer participants compared to other designs.
7.
A disadvantage of the matched pairs design is:
Correct Answer
C. It is difficult and time consuming as it relies on valid tests
Explanation
The matched pairs design is a research method that involves comparing two similar groups of participants, with each participant in one group being matched to a participant in the other group. This design is advantageous as it helps to avoid order effects and individual differences, which could confound the results. However, a disadvantage of this design is that it can be difficult and time-consuming to implement as it relies on finding and using valid tests or measures to match the participants accurately.
8.
2 advantages of a field experiment are:
Correct Answer(s)
A. Natural environment means greater ecological validity
D. Lower demand characteristics so results are more valid
Explanation
A field experiment has the advantage of taking place in a natural environment, which increases its ecological validity. This means that the results obtained are more likely to reflect real-life situations and can be generalized to a larger population. Additionally, field experiments often have lower demand characteristics, meaning that participants are less likely to alter their behavior due to being in an artificial setting. This increases the validity of the results as they are more likely to represent the participants' true behavior.
9.
The independent variable is:
Correct Answer
C. The thing the researcher manipulates
Explanation
The independent variable refers to the factor that the researcher intentionally changes or manipulates in an experiment. It is the variable that is believed to have an effect on the dependent variable, which is the outcome or result being measured. In this case, the correct answer is "The thing the researcher manipulates" as it accurately describes the role of the independent variable in an experiment.
10.
' Boys will be more aggressive than girls' is an alternative hypothesis. The null hypothesis is:
Correct Answer
B. There will be no difference in aggression between boys and girls
Explanation
The correct answer is "There will be no difference in aggression between boys and girls." This is because the null hypothesis is a statement that assumes there is no significant difference or relationship between the variables being studied. In this case, the null hypothesis suggests that there is no difference in aggression between boys and girls. The alternative hypothesis, on the other hand, suggests that boys will be more aggressive than girls.