# Operational Definitions

50 %
50 %
Education

Published on September 4, 2008

Source: authorstream.com

Headlessprofessor presents : Headlessprofessor presents Operational definitions Objective : Objective Describe the logic of science Purpose of Science : Purpose of Science Understand Purpose of Science : Purpose of Science Understand Predict Purpose of Science : Purpose of Science Understand Predict Control Logic of science : Logic of science The operational definition of a variable is how it is measured (or manipulated, controlled, or randomized) : The operational definition of a variable is how it is measured (or manipulated, controlled, or randomized) Synthetic, descriptive statements : Synthetic, descriptive statements Require that every variable be anchored to something empirically measurable Theology is not empirical : Theology is not empirical Claims about God, salvation & afterlife cannot be resolved with telescopes, microscopes or DNA labs Each variable must be handled in one of these ways : Each variable must be handled in one of these ways Measurement Manipulation Control (make it a constant) Randomization assumed Variables can be measured : Variables can be measured Dependent variables must be measured Independent variables can be measured or handled in other ways Variables can be measured : Variables can be measured Classification: male/female Other classifications : Other classifications Before / after Experimental / control Pass / fail Choice A / Choice B / Choice C Variables can be measured : Variables can be measured Classification: male/female Ordering: excellent, good, fair, poor Likert Scale : Likert Scale Totally agree Mostly agree Neutral / don’t know Mostly disagree Totally disagree Truth scale : Truth scale Definitely Probably Possibly No way ! Descriptive scale : Descriptive scale Extremely Very Somewhat Slightly Not at all Frequency scale : Frequency scale Always Usually Sometimes Rarely Never Variables can be measured : Variables can be measured Classification: male/female Ordering: excellent, good, fair, poor Enumeration: age; score on a test Measurement should be precise : Measurement should be precise Variables can be manipulated : Variables can be manipulated Intentionally making subjects different on a variable Variables can be manipulated : Variables can be manipulated Intentionally making subjects different on a variable Can be done via random assignment grouping, and then treat differently Variables can be manipulated : Variables can be manipulated Intentionally making subjects different on a variable Can be done via random assignment grouping, and then treat differently Essential feature of an Experiment Variables can be held constant : Variables can be held constant Exclusive sampling Variables can be held constant : Variables can be held constant Exclusive sampling, or Proportionate assignment to groups Variables can be randomized : Variables can be randomized Requires large sample Variables can be randomized : Variables can be randomized Requires large sample Requires random assignment to groups Variables can be randomized : Variables can be randomized Requires large sample Requires random assignment to groups Can only be assumed, never attained In good scientific research : In good scientific research it is clear how each and every variable was dealt with. Headlessprofessor presents : Headlessprofessor presents Operational definitions

 User name: Comment:

## Related presentations

#### Why Vidya Sagar

December 10, 2018

#### Chairman Message (1)

December 10, 2018

#### Reasons to Be a Social Activist by Beny Steinmetz

November 26, 2018

#### Fast track in Bukit Timah Chemistry Tuition

December 10, 2018

#### How to Take a Personality Test for a Job

December 10, 2018

#### 1213_LED_GroepF_presentatie

December 10, 2018

## Related pages

### Operational definition - Wikipedia, the free encyclopedia

An operational definition is a result of the process of operationalization and is used to define something (e.g. a variable, term, or object) in terms of a ...

### Operationale Definition – Wikipedia

Der Begriff operationale Definition oder Operationalisierung eines Merkmals geht auf Bridgman (1927) zurück. Die ursprüngliche, auf die Physik ...

### Duden | ope­ra­ti­o­nal | Rechtschreibung, Bedeutung ...

Definition, Rechtschreibung, Synonyme und Grammatik von 'operational' auf Duden online nachschlagen. Wörterbuch der deutschen Sprache.

### Operational definition (What is it? When is it used ...

When is it used? Any time data is being collected, it is necessary to define how to collect the data. Data that is not defined will usually be inconsistent ...

### Operational definition - Psychology Wiki - Wikia

The operational definition of an empirical term (i.e., a descriptor of some element of physical experience) is the description of a specific process, or ...

### What is "operational definition" ? | Yahoo Answers

Best Answer: Operational definition A very clear and very precise explanation of the items being measured or the terms that are used to ensures ...

### Operational definition | Define Operational definition at ...

Operational definition definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now!

### operational – Wiktionary

... Definitionen sehr hilfreich sein. Eine sehr einfache operationale Definition für Wort kann man so formulieren: Sieh nach, ...