Threats to validity Essay Example | Topics and Well Written Essays - 250 words

Threats to validity - Essay Example 231). Owing to the involved period, participants to an experiment may adjust to the experimental environment and realign physically, psychologically, or emotionally due to maturation in the set environment or towards expectations (Jackson, 2011). A hypothetical case to history, as a threat to validity, involves an experiment, carried over a ‘six-month’ period, to test effectiveness of a depression therapy. While the participants’ stay in the experimental environment over time, and not the particular therapy may have psychological and emotional impacts to reduce the participants’ depression level, the researcher may be misled to believe that the therapy is effective in managing the level of depression (Jackson, 2011). These types of threats to validity are very difficult to recognize and control. This is because they are majorly psychologically subconscious factors in participants that are not evident to both a researcher and a participant. They can however be controlled through precautionary measures such as application of an â€Å"equivalent control group† to eliminate the effects on validity (Jackson, 2011, p.

Journal Reflection Essay Example | Topics and Well Written Essays - 250 words

Journal Reflection - Essay Example Museums maximize on this because positive attitudes build inside their visitors the desire and value of returning again (Black 26). This is a plus for them because of the assurance of flow of incentives. A negative experience is when my English teacher chose me for a presentation during a symposium in our school which was attended by neighboring schools. I was a freshman and the ten minutes duration seemed very long. Fear engulfed me causing me to terribly shake in front of a huge and expectant crowd, despite I being a smart student. This happened because of lack of self-confidence and courage as I had never been exposed to such a large gathering. However, had I composed myself and risen above my fear, the presentation would have greatly been successful. From this, I learnt that public speech requires putting scripts in order and assuming eye contact with the crowd in front. It is good to record few points for a good flow of ideas during the presentation. Successful and failed academic experiences have taught me great opportunities students have that can spur them to greater heights. It is therefore important to be ready as a good student in the future since that can be my only chan ce for stepping into another