Investigation techniques

1. qualitative research

1.1. understanding human behaviour

1.2. subjective

1.3. naturalistic and uncontrolled observation

2. valid, real,rich and deep data

2.1. grounded

2.2. insider perspective

2.2.1. Task

2.2.2. Prerequisites

2.3. ungeneralizable: single case of studies

2.3.1. Task

2.3.2. Prerequisites

3. verificative,confirmatory,reliable

3.1. ungrounded

3.2. outcome perspective

3.3. generalizable:multiple case studies

4. quantitative research

4.1. numerical data

4.2. objective

4.3. obtrusive and controlled observation