Sampling in the Qualitative research

Sampling in the Qualitative research

1. It is guided by one or several purposes

   • sample sampleˈsampəl
     • is
       • It is a unit of analysis
         • Sub-part of the universe, that is, a small part of the population is extracted
           • It is determined during or after the initial dive
             • Your number is defined from
               • * Nature of the phenomenon * Collection and analysis capacity * Saturation of categories * Understanding of the phenomenon
           • It can be adjusted at any time during the study
         • Search case types or units of analysis found in the environment or context
   • sampling
     • is
       • It is the way, the technique or the way in which the sample is selected
         • Techniques
           • 1. Maximum Variation
             • It seeks to show different perspectives and represent the complexity of the phenomenon studied.
               • Ej: A psychiatrist who considers from very depressed patients to individuals with mild depression.
           • 2. Homogeneity
             • difference of the diverse samples, in these studies the units that are going to be selected have the same profile or characteristics, or share similar features.
               • Ej: Select a group of 50 women estimated in the same age range
           • 3. Chains or networks / 6. Snowball
             • In this case, key participants are identified and they add to the sample, they are asked if they know other people who can provide more data or expand the information.
               • Ej: Psychologist conducts research to school children first for apparent sexual abuse, in which it is identified that the brothers and cousins of those involved must enter the investigation by apparent participation.
           • 4. Convenience
             • These samples are formed by the cases available to which we have access.
               • Ej. Efectuar entrevista a profundidad en niveles gerenciales en un clima organizacional.
           • 5. Confirmatory
             • Its purpose is to add new cases when in the analyzed any controversy arises or arises information that points in different directions.
               • Ej. Investigaciones sobre las oportunidades laborales para personas con capacidades diferentes.
           • 7. Theorical or Conceptual
             • When the researcher needs to understand a concept or theory, you can sample cases that serve him for this purpose.
               • Ej. Si quiero evaluar los factores que hacen que un hombre sea capaz de violar a una mujer, puede obtener la muestra en cárceles donde se encuentren recluidos criminales violadores.
           • 8. by opportunity
             • These are cases that fortuitous occur before the researcher just when you need them.
               • Ej. Una convención nacional de alcohólicos anónimos, justo cuando conducimos un estudio sobre las consecuencias del alcoholismo en la familia.
           • 9. Typical Case
             • This is a case or problem that has previously been identified and probably worked.
               • Ej: La población desplazada o las víctimas del conflicto armado, es una problemática que se ha trabajado a lo largo del tiempo por diferentes tipos de investigación.
             • 10. Experts
               • Specialized and trained personnel determine if the test items comply with the objective and apply for the chosen population.
                 • Ej: Se busca realizar investigación sobre niños con leucemia, en los que se busca entender su motivación y su contexto social. Expertos deben evaluar si es acto o no el proceso.
               • 11. Volunteers
                 • Analysis and questions of the people are carried out who want to be part of the investigation.
                   • Ej: Psicólogo pretende evaluar los motivos de deserción académica, por tal razón realiza encuesta sobre los estudiantes que quieran hacer parte de esta investigación.
                 • 12. Dues
                   • It does not have a defined group for the investigation.
                     • Ej: Persona encargada de la investigación, busca lugares estratégicos y concurridos en los que pueda sustraer la información para dicha investigación.
         • Types
           • It is notProbabilistic
             • used
               • Quantitative Research, but also qualitative
           • Probabilistic
             • used
               • Qualitative Research