Genesis author box settings

functions.php

/* Display author box on single posts
add_filter( 'get_the_author_genesis_author_box_single', '__return_true' );

//* Modify the size of the Gravatar in the author box
add_filter( 'genesis_author_box_gravatar_size', 'altitude_author_box_gravatar' );
function altitude_author_box_gravatar( $size ) {
    return 90;
}

//* Modify the size of the Gravatar in the entry comments
add_filter( 'genesis_comment_list_args', 'altitude_comments_gravatar' );
function altitude_comments_gravatar( $args ) {
    $args['avatar_size'] = 80;
    return $args;
}