abstract title: product for use in the prophylactic or therapeutic treatment of a negative emotion or introvert behavior the invention relates to a nutritional composition comprising dietary fiber, a peptide having 7 or more amino acid units, the nutritional composition comprising a tryptophan source, which may be said peptide or different from there for use in the treatment of a negative emotion or introvert behavior. the invention further relates to a combination of dietary fiber, a peptide having 7 or more amino acid units, the nutritional composition comprising a tryptophan source, which may be said to have peptide or different from there, and optionally one or more other components, to use in the treatment of a negative emotion or introvert behavior. Patent Product Summary: "Product for use in the prophylactic or therapeutic treatment of a negative emotion or introvert behavior". The present invention relates to a nutritional composition comprising dietary fiber, a peptide having 7 or more amino acid units, wherein the nutritional composition comprises a source of tryptophan, which may be said peptide or different thereof, for use. in treating a negative emotion or introvert behavior. The invention further relates to a combination of dietary fiber, a peptide having 7 or more amino acid units, wherein the nutritional composition comprises a source of tryptophan, which may be said peptide or different from it and optionally one or more. plus other components for use in treating negative emotion or introvert behavior.abstract title: product for use in the prophylactic or therapeutic treatment of a negative emotion or introvert behaviour the invention relates to a nutritional composition comprising dietary fibre, a peptide having 7 or more amino acid units, the nutritional composition comprising a tryptophan source, which may be said peptide or different there from, for use in the treatment of a negative emotion or introvert behaviour. the invention further relates