Read the passage carefully and answer the question that follows -
Phenomenology lies on the opposite side of the explanatory gap from computational theories. It is the study of consciousness from the first-person perspective-how the world appears to me. There is a long tradition of phenomenology in European philosophy and psychology, but it is sometimes dismissed as a legitimate approach to the study of perception, because it is inherently subjective. Scientific approaches are usually considered to require objective methods. However, phenomenological studies can be performed using a variant of standard empirical scientific methods, including hypothesis generation and observation. There are several key differences between conventional psychophysical observations and phenomenological observations. The convention in psychophysics is to keep subjects naïve as to the purpose of the experiment, and give them a well-defined task with highly constrained responses such as "yes" versus "no". In phenomenological experiments subjects are often fully informed about the purpose of the experiment, and their task is kept relatively open with loosely constrained responses. Response classification may occur only after the data have been examined. A key check on validity in phenomenological experiments is intersubjectivity, or agreement among individuals about the nature of their perceptual experience.
The provided passage discusses phenomenology, defining it as the study of consciousness from a first-person perspective—how the world appears to an individual. While traditional scientific approaches often require objective methods and can be seen as distinct from the subjective nature of phenomenology, the passage clarifies that phenomenological studies can indeed incorporate variants of standard empirical scientific methods. These methods include crucial scientific elements like hypothesis generation and observation.
The text highlights key differences between conventional psychophysical observations and phenomenological observations. In conventional experiments, subjects might be kept unaware of the study's purpose and given tasks with limited response options (like "yes" or "no"). In contrast, phenomenological experiments often involve participants who are fully informed about the study's goals. Their task is usually more open-ended, allowing for detailed, less constrained responses. The passage specifically mentions that phenomenological studies can use empirical scientific methods, which inherently involve scientific observation and hypothesis generation. A critical aspect for validating phenomenological findings is intersubjectivity, meaning agreement among individuals about their experiences.
Based on the passage, scientific observation is a method employed within phenomenological studies, making option 3 the accurate description.