Methods Overview Ppoint

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Research Methods Overview of quantitative and qualitative methods

Quantitative Methods      Survey methods Experimentation Social network analysis Data visualization Spatial analysis

Survey Methods       Survey design Population and Sample Instrumentation Variables Analysis and interpretation Experimental design (or not)

Survey Design   Why surveys?

What’s the purpose?

Population and Sample    Identify your population Identify your sampling design (single stage, cluster) Identify your selection process (random, systematic, convenience)  Will you stratify?

Population and Sample - Example    Identify your population (MOSS K12 students) Identify your sampling design (single stage, cluster) (Cluster – draw from schools)  Identify your selection process (random, systematic, convenience) (systematic) Will you stratify?

7 th and 8 th (Yes – 3 graders) rd and 4 th grade, 5 th and 6 th ,

Instrumentation  Name the instrument you will use (your own design? Modified from another? In tact from another?)     Describe its validity and reliability Cover letter Pilot testing Procedures for administering the survey

Instrumentation - Example      Name the instrument you will use (DeWaters and Powers’ energy literacy assessment, 4H science process skills inventory, our own science identity scale) Describe its validity and reliability Cover letter Pilot testing Procedures for administering the survey (given when students arrive and after their inquiry presentations on Friday)

Variables   Associate with items on your survey Identify independent, dependent

Analysis     Response / non-response bias Descriptive analysis Inferential questions and hypothesis testing Data display

Experimental and Quasi Experimental Designs  Pages 172 – 173 in Creswell

Qualitative Methods  Characteristics of qualitative  Naturalistic setting  Researcher as instrument  Multiple sources of data  Inductive and deductive analysis  Participants’ meanings  Emergent design  Holistic account  Reflexivity (reflection)

Qualitative Data Collection     Observation Interviews Document review Audio and video materials

Observations Complete participant Observer as participant Participant as observer Complete observer

Interviews Face to face Group Single person Phone / video / email

Document review

Public Private

Data Recording     Interview or observation protocol Record “field notes” Audio or video record interviews Transcribe interviews

Data Analysis Raw Data Organize data Read through data Code data Themes and Description Interpretation

Validity and Reliability in Qualitative Methods         Triangulation Member checking Thick, rich description Clarify researcher perspective Negative case Prolonged time in the field Peer debriefing External audit

Mixed Methods

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