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PSYCHOLOGY EXAM 3/4 > key science skills > Flashcards

key science skills Flashcards

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1
Q

What is the hypothesis

A

What you expect as the chemist to happen

Educated guess

should include the relationship between the dependent and independent variables

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2
Q

What is the aim

A

What the purpose of the experiment is

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3
Q

Independent variable

A

Variable that is selected/changed by the experimenter - has a direct impact on the measured variable

Horizontal Axis

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4
Q

Dependent variable

A

Variable that is measured by the experimenter - assumed to have changed as a result of the independent variable

Vertical Axis

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5
Q

control variable

A

Variable that is kept constant to allow for the testing of the relationship between the dependent and independent variables

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6
Q

what is the method

A

Demonstrates how the experiment will be conducted

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7
Q

what is a population

A

everyone that the researcher is INTERESTED in investigating.

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8
Q

what are ethical considerations

A

a set of principles researches must follow, including voluntary participation, informed consent, harm minimisation and confidentiality.

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9
Q

4x ethical considerations

A

Sourcing of Materials,
Type of Research being collected,
Falsification of data,
Acknowledgement of prior work

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10
Q

ways to present data

A

Table or Graph (Labelled)

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11
Q

validity

A

Does the experiment test the hypothesis

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12
Q

accuracy

A

How close are the measured values to the true or accepted value

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13
Q

precision

A

How close are the measured values to EACH OTHer

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14
Q

reproducibility

A

Closeness of the values measured from repeated experiments (under different conditions)

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15
Q

reliability

A

The consistency of the collection of measurements

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16
Q

repeatability

A

Closeness of the values measured from repeated experiments (under identical conditions)

17
Q

random errors

A

Errors that follow no regular pattern - can cause a high variation in results

Caused by effects of changes in the surroundings (e.g. temperature fluctuations, air currents, readability of measuring device)

Can be addressed by repeating readings

18
Q

systematic errors

A

Errors that result in values that are reproducible and different from the true values by a fixed amount in the same direction

Caused by poor experimental design and poorly calibrated equipment

19
Q

controlled group

A
20
Q

experimental group

A
21
Q

quantitative

A

-numerical data
-objective
-measurement
-does not depend on judgement by an experimenter

22
Q

qualitative

A

-non-numerical e.g judgement
-subjectie
-dependent on experimenter
-measure of personal data

PSYCHOLOGY EXAM 3/4 (1 decks)

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