Observation under controlled condition is known as \ \ \ \ \ . - AIIMS Raipur NO- 2019 (shift 3rd)

AIIMS Raipur NO- 2019 (shift 3rd)

Nursing Research & Statistics

Easy

Appeared in: AIIMS Raipur NO- 2019 (shift 3rd)

Explanation

Experimental research design is a scientific method used to investigate cause-and-effect relationships between variables.
It is fundamentally characterized by the researcher's active manipulation of an independent variable (the 'cause' or intervention).
This manipulation and subsequent observation of the dependent variable (the 'effect') occur under carefully controlled conditions to rule out the influence of other extraneous factors.
This methodology is often referred to as a Randomized Controlled Trial (RCT) in clinical settings and is considered the most powerful design for testing hypotheses.

Option A: A survey is a non-experimental research method used for collecting data, typically on attitudes, opinions, or characteristics of a population. It does not involve manipulation or the controlled conditions required for an experiment.
Option B: Randomization is a specific procedure used within an experimental design to assign participants to different groups (e.g., experimental vs. control). It is a key feature that enhances a study's internal validity, but it is not the research design itself.
Option D: Control is a core principle or element of an experimental design, referring to the measures taken to minimize the influence of extraneous variables, most notably through the use of a control group. It is a component, not the name of the entire design.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Research Design Types as background academic context rather than a clinical decision trigger.
Nurses rely on evidence from experimental research, particularly Randomized Controlled Trials (RCTs), to guide evidence-based practice, ensuring patient care interventions are effective, safe, and based on scientific proof.
A strong understanding of experimental design allows nurses to critically appraise research articles to determine if a new intervention (e.g., a wound care technique, a patient education program) is valid and should be adopted into clinical practice.
What if? If a study involves an intervention and observation but lacks both randomization and a true control group, it is classified as a pre-experimental or quasi-experimental design. These designs provide weaker evidence for cause-and-effect and are more susceptible to bias.

How to Approach the Question

First, identify the key phrases in the question stem: "observation" and "controlled condition".
These terms suggest a scientific, structured research method designed to isolate variables and determine causality.
Next, evaluate each option in this context.
Recognize that 'Survey' is primarily descriptive and not controlled.
Identify that 'Randomization' and 'Control' are essential components or procedures within a larger research framework, not the framework itself.
Conclude that 'Experimental research design' is the comprehensive term that encompasses the entire process of observation under controlled conditions with the manipulation of variables.

Concept Tested & Keywords

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