It has been suggested that dietary fibers can affect food intake and satiation. Satiation, or meal termination, can be induced by sensory properties and energy density of fiber-rich food products, but also by the chemical/physical/rheological behavior of the fibers in the stomach and/or intestine. It is not clear which properties are the key regulators of satiation by fiber sources. There are many types of dietary fiber, which have diverse sensory and chemical properties, thus these might have different effects on satiation.

Inclusion Criteria:

• Age: 18-50 years
• BMI: 18-25 kg/m2
• Healthy: as judged by the participant

Exclusion Criteria:

• Weight loss or weight gain of more than 5 kg during the last 2 months
• Using an energy restricted diet during the last 2 months
• Lack of appetite for any (unknown) reason
• Having problems with chewing and swallowing
• Having problems with digestion
• Restrained eater
• Hypersensitivity for gluten or other ingredients of chocolate cookies
• Hypersensitivity for one of the fibers