Methacrylic resin composition, resin modifier, and molded article

A methacrylic resin composition, comprising:

• from 10 to 99 parts by mass of a methacrylic resin (A) comprising not less than 80 mass % of a methyl methacrylate unit and
• from 90 to 1 part by mass of a block copolymer (B) comprising from 10 to 60 mass % of a methyl methacrylate polymer block (b1) and from 90 to 40 mass % of an acrylate polymer block (b2),
• wherein the acrylate polymer block (b2) is a copolymer block comprising from 50 to 90 mass % of an alkyl acrylate and from 50 to 10 mass % of an aromatic (meth)acrylate, and the alkyl acrylate is at least one selected from the group consisting of n-butyl acrylate and 2-ethylhexyl acrylate, and
• wherein the block copolymer (B) has a refractive index of from 1.485 to 1.495 and a total of (A) and (B) is 100 parts by mass,
• wherein the methyl methacrylate polymer block (b1) has a refractive index ranging from 1.485 to 1.495 and the acrylate polymer block (b2) has a refractive index ranging from 1.485 to 1.495.