Observations involve watching and recording behaviors as they naturally occur without influencing them. This allows researchers to describe behaviors and relationships between variables in real-world settings. Different types of observations include naturalistic, participant, structured, and unstructured observations. While observations provide accurate and reliable data in natural contexts, they also have limitations such as not being able to study past events and requiring events of interest to occur naturally.
A help for students studying psychology at A' Level for the Oxford Cambridge external examinations. Use the presentation as a means to revise the 20 core studies.
A help for students studying psychology at A' Level for the Oxford Cambridge external examinations. Use the presentation as a means to revise the 20 core studies.
A presentation which goes through the different research methods used across the learning approach, biological approach and psychodynamic approach of unit 2 AS psychology.
A presentation which goes through the different research methods used across the learning approach, biological approach and psychodynamic approach of unit 2 AS psychology.
The Scientific MethodSteps in the Scientific MethodThere is a .docxssusera34210
The Scientific Method
Steps in the Scientific Method
There is a great deal of variation in the specific techniques scientists use explore the natural world. However, the following steps characterize the majority of scientific investigations:
Step 1: Make observations
Step 2: Propose a hypothesis to explain observations
Step 3: Test the hypothesis with further observations or experiments
Step 4: Analyze data
Step 5: State conclusions about hypothesis based on data analysis
Each of these steps is explained briefly below, and in more detail later in this section.
Step 1: Make observations
A scientific inquiry typically starts with observations. Often, simple observations will trigger a question in the researcher's mind.
Example: A biologist frequently sees monarch caterpillars feeding on milkweed plants, but rarely sees them feeding on other types of plants. She wonders if it is because the caterpillars prefer milkweed over other food choices.
Step 2: Propose a hypothesis
The researcher develops a hypothesis (singular) or hypotheses (plural) to explain these observations. A hypothesis is a tentative explanation of a phenomenon or observation(s) that can be supported or falsified by further observations or experimentation.
Example: The researcher hypothesizes that monarch caterpillars prefer to feed on milkweed compared to other common plants. (Notice how the hypothesis is a statement, not a question as in step 1.)
Step 3: Test the hypothesis
The researcher makes further observations and/or may design an experimentto test the hypothesis. An experiment is a controlled situation created by a researcher to test the validity of a hypothesis. Whether further observations or an experiment is used to test the hypothesis will depend on the nature of the question and the practicality of manipulating the factors involved.
Example: The researcher sets up an experiment in the lab in which a number of monarch caterpillars are given a choice between milkweed and a number of other common plants to feed on.
Step 4: Analyze data
The researchersummarizes and analyzes the information, or data, generated by these further observations or experiments.
Example: In her experiment, milkweed was chosen by caterpillars 9 times out of 10 over all other plant selections.
Step 5: State conclusions
The researcher interprets the results of experiments or observations and forms conclusions about the meaning of these results. These conclusions are generally expressed as probability statements about their hypothesis.
Example: She concludes that when given a choice, 90 percent of monarch caterpillars prefer to feed on milkweed over other common plants.
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2. A method of data collection in
which the situation or individual of
interest is watched and the
relevant facts, actions and
behaviors are recorded.
3. The researcher observes the
behavior without influencing it.
1.
to describe behavior as it naturally occurs
2.
to assess relationships among variables present
4. Observations
can be conducted with the
help of
In recent research, Observations are
conducted with the help of
7. Observing a phenomena
that cannot be created in lab,
for practical or ethical reasons
Method is expensive
Effects can only be observed
when such events occur naturally
8.
Researcher is passive recorder
A psychologist observes the confrontation between two rival
neighborhood gangs from the window of an abandoned building.
9.
Example: effect of early childhood isolation on later
psychological development.
We can’t isolate children to study them But we can use
naturalistic observation when we discover such cases.
10. (1993) – descriptions of feral
children (raised outside human cultures)
(1977) case studies of children
subjected to unusual isolation by parents (e.g.,
Genie)
(1965) – observation of institutionalized
children, Showed effects of deprivation of
stimulation during infancy and early childhood
11. Observer
joins a group for the purpose of
studying group members
Researcher is insider and intervene in situations
Researcher can be biased
1.
2.
How is it different from ethnography?
Potential cost to objectivity= Stockholm
syndrome
12. Usually
“Check Lists”
focus on predetermined categories
study only the factors of interest
easy to analyze data
saves time
Replication depends upon following exactly the
same procedures
14.
Categories are not predetermined
Focus on new emergent issues
Researcher do not predict anything in advance
Observer can be biased
Difficult to analyze
Time and sources consuming
15.
Also called
Researcher do not identify
himself and mixes in situation
Researcher easley understands the participants
Purpose is to achieve access to behaviors
16. Also called undisguised observation
Researcher identifies himself and
explains the purpose of observation
Participants knew that they are
being observed and can change their behavior
17.
Researcher manipulates one or more variables in a
natural setting to determine effect on behavior
One end of the intervention – non-intervention continuum
18.
For example Crusco & Wetzel (1984)
waitresses worked as allies, tip amount was dependent
variable
Compared No Touch condition with Shoulder Touch
conditions
Men tipped more than women
Both men and women tipped more after being touched at
some point during their meal.
19.
Phenomena can be studied in real context
Data collected is very accurate in nature and also very
reliable.
Best to study human nature
20.
Problems of the past cannot be studied
Participant feel uncomfortable being watched
Time consuming method and hence expensive
Requires specific skills
Researcher has to wait until the appropriate event occurs