A lab experiment establishes cause and effects as there are 2 controls of iv. It is also a controlled experiment.
Positive of a lab expeirment:
Its ev's and cv's can be controlled
The study is replicable (standardised procedure)
Experienter has control and can establish cause and effect
Negatives of a lab experiment:
Participants could guess the aim
It's in an unrealistic setting so results may not be appliable
A field experiment is done in a natural environment which established cause and effect
Positives of a field study:
Its a real life situation which means it has high real mundane realism
They are reduced demand characteristics
Negatives of field study:
Hard to control ev's and cv's
Ethical issuse may occur
Online research is reaserch which is gathered from online resources,for example, questionaires.
Positives of online research:
Theres a large sample
Diverse group able to answer
A lot cheaper
Negatives of online research:
Biased sample
Easy to lie which would affect ecological validity
A Quasi experiment is where the iv isn't under direct control of the researcher
A difference study is a study that compares two groups of participants and looks for differences between them, for example, gender, age , anxiety
A natural experiment is when the IV is not manipulated by the researcher, but is naturally occurring
Positives of quasi experiments:
Allows us to research real-life problems
Negatives of quais experiments:
Difficulty for replication
Participants can't be randomly assigned
Advantages of field based studies include naturalistic observation (participants behave as they would normally) and ecological validity (results apply to real life situations)
Field based studies are conducted outside of the lab, where participants are observed behaving naturally in their own environments
Lab based studies are conducted in an artificial environment, which can be controlled to ensure that the variables being tested have no other influence on them