When planning media texts, producers must consider their target audience. They use audience profiling and research methods like questionnaires, focus groups, and interviews to construct and narrow down their target audience. Demographics and systems like NRS social grades are commonly used to classify populations by factors such as age, gender, income level, and occupation in order to define the target audience. Psychographics also help describe audiences by examining personality traits, values, and lifestyles. Qualitative research methods allow producers to personally engage with the public to help identify an "ideal" target listener profile.