Sony, Honda and Volvo are examples of brand that using slab serif font.

Decorative font only can be used in Book Title not for a company logo.

Decorative font can be used as symbolism that complement the brand image.

There is no psychology applies in decorative font , its just a font nothing more.

Decorative font can evoke culture-specific memes.

Decorative font also known as display font.

Display font used in Instagram logo is

Fonts that are design to resemble handwritten calligraphy.

Fonts that are design to resemble typewriter styles.