Multivariate Relationships

Slides:

Advertisements

Similar presentations

Multivariate Relationships Goal: Show a causal relationship between two variables (X  Y) Elements of a cause-and-effect relationship: –Association between.

Advertisements

Chapter 4: Designing Studies

FUNDAMENTAL RESEARCH ISSUES © 2012 The McGraw-Hill Companies, Inc.

OVERVIEW OF RESEARCH METHODS l How are Research Methods Important? How are Research Methods Important? l What is Descriptive Research? What is Descriptive.

RESEARCH DESIGN : 1. Kinds of support for making CAUSAL interpretations of observed relationships quality of theory research design used measurement procedures.

Study Design Data. Types of studies Design of study determines whether: –an inference to the population can be made –causality can be inferred random.

Studying Behavior. Midterm Review Session The TAs will conduct the review session on Wednesday, October 15 th. If you have questions, your TA and.

OVERVIEW OF RESEARCH METHODS

Research in Psychology. Questions What can we find out with research? Why should we believe scientists? Isn’t Psychology just common sense?

Prelude to the Research Hypotheses Lecture I’m sure that you already know the central role that research hypotheses play in scientific research !! In fact,

Research Methods in Crime and Justice Chapter 5 Causality.

Chapter 3 The Research Design. Research Design A research design is a plan of action for executing a research project, specifying The theory to be tested.

Understanding Observational Studies Lecture 9 Section 3.4 Fri, Feb 3, 2006.

Using Recursion in Models and Decision Making MAMDM4a-b

STUDYING BEHAVIOR © 2009 The McGraw-Hill Companies, Inc.

+ Chapter 4 Designing Studies 4.1Samples and Surveys 4.2Experiments 4.3Using Studies Wisely.

Producing Data Designing Experiments 3 Basic Principals of Experimental Design Control Control the effects of lurking variables on the response, most.

Designing Experiments 5.2. Vocabulary Experimental Units: the individuals on which the experiment is done Subjects: when the experimental units are humans.

 Descriptive Methods ◦ Observation ◦ Survey Research  Experimental Methods ◦ Independent Groups Designs ◦ Repeated Measures Designs ◦ Complex Designs.

METHODS IN BEHAVIORAL RESEARCH NINTH EDITION PAUL C. COZBY Copyright © 2007 The McGraw-Hill Companies, Inc.

Quantitative and Mixed Research Designs V. Darleen Opfer.

Essential Question: How do you solve a system of 3 equations? Students will write a summary of the steps for solving a system of 3 equations. Multivariable.

STATISICAL ANALYSIS HLIB BIOLOGY TOPIC 1:. Why statistics? __________________ “Statistics refers to methods and rules for organizing and interpreting.

Chapter 13 Section 2. Chi-Square Test 1.Null hypothesis – written in words 2.Alternative hypothesis – written in words – always “different” 3.Alpha level.

Logic of Control & Sampling Chs. 4 & 6. The Case of the Surgeon… Test Group & Control Group (We need a comparison!) ▫Test Group=The subjects who receive.

Approaches to social research Lerum

Making Sense of the Social World 4th Edition

Causality, Null Hypothesis Testing, and Bivariate Analysis

2.7 The Question of Causation

Causation & Research Designs

Experimental Psychology PSY 433

Statistics: Chapter 1.

Chapter 10 Causal Inference and Correlational Designs

Chapter 4: Studying Behavior

Research May - June 2009.

4.3: Using Studies Wisely.

Making Causal Inferences and Ruling out Rival Explanations

Control Tables March 7, 2011.

Ten things about Experimental Design

Chapter 4: Designing Studies

Chapter 4: Designing Studies

I271b Quantitative Methods

Evaluating research Is this valid research?.

The Experimental Method in Psychology

Designing Experiments

Experiments & Causation.

The Research Topic: Asking Good Questions

Lesson Using Studies Wisely.

What is a Hypothesis?.

Chapter 4: Designing Studies

Chapter 4: Designing Studies

Chapter 4: Designing Studies

Experiments & Observational Studies

Research Methods for the Behavioral Sciences

Where we’ve been and where we’re going…

Chapter 4: Designing Studies

Chapter 4: Designing Studies

POSC 202A: Lecture 2 Today: Introduction to R

Chapter 4: Designing Studies

Designing Experiments

Experiments Observational Study – observes individuals and measures variables of interest but does not attempt to influence the responses. Experiment.

Chapter 4: Designing Studies

Chapter 4: Designing Studies

Chapter 3 Examining Relationships

Chapter 4: Designing Studies

Chapter 4: Designing Studies

Experiments Observational Study – observes individuals and measures variables of interest but does not attempt to influence the responses. Experiment.

Enhancing Causal Inference in Observational Studies

Multivariate Relationships

Enhancing Causal Inference in Observational Studies

Presentation transcript:

Multivariate Relationships Goal: Show a causal relationship between two variables (X  Y) Elements of a cause-and-effect relationship: Association between variables (based on methods we’ve covered this semester) Correct time order (X occurs before Y) Elimination of alternative explanations (variable Z that acts on both X and Y, making them appear to be associated) Anecdotal evidence does not rule out causality

Controlling for Other Variables Observational studies: Researchers are unable to control levels of variables and may only observe them as they occur in nature Statistical Control: Identifying individuals (cases) by their level of an alternative explanatory (control) variable (although not assigning subjects the levels) Spurious Association: When both variables of interest are dependent on a third variable, and their association vanishes when controlling for the other variable X1 X2 Y