Methods, apparatus, and systems to collect audience measurement data

An apparatus to collect audience measurement data comprising:

• a people meter interface to collect audience identification data during a first time period, the audience identification data being collected by prompting audience members in a monitored household to self-identify using a people meter communicatively coupled to the people meter interface;
• a programming measurement circuitry to collect first program identification data during the first time period and second program identification data during a second time period after the first time period;
• and
• a behavior processor to:
• develop audience member behavior data based on the first program identification data and the audience identification data collected in the first time period;
• and
• identify the audience members associated with the second program identification data based on the audience member behavior data.

A machine-accessible medium having instructions stored thereon that, when executed, cause a machine to:

• collect first program identification data and audience identification data during a first time period, the audience identification data being collected by prompting audience members in the monitored household to self-identify using a people meter;
• develop audience member behavior data based on the first program identification data and the audience identification data collected in the first time period;
• collect second program identification data in a second time period after the first time period without collecting audience identification data;
• and
• identify the audience members associated with the second program identification data based on the audience member behavior data.

A method of collecting audience measurement data in a monitored household, the method comprising:

• collecting first program identification data and audience identification data during a first time period, the audience identification data being collected by prompting audience members in the monitored household to self-identify while the audience members are consuming first media provided by a first type of media system;
• developing audience member behavior data based on the first program identification data and the audience identification data collected in the first time period;
• collecting second program identification data during a second time period after the first time period without collecting audience identification data while the audience members are consuming second media provided by a second type of media system different from the first type of media system;
• and
• identifying the audience members associated with the second program identification data based on the audience member behavior data.