What is the grammatical error in this sentence?
They're expected to be at the movies by 7:00 p.m.
What is positive reinforcement in Psychology?
In operant conditioning, positive reinforcement includes the addition of a reinforcing stimulus following a behavior that makes it more likely that the behavior will occur again. When a reward or event occurs after a particular action, that behavior is more likely to continue.
“Love is not love Which alters when it alteration finds, Or bends with the remover to remove. O no, it is an ever-fixed mark That looks on tempests and is never shaken; It is the star to every wand'ring bark, Whose worth's unknown, although his height be taken." (Sonnet 116)” ― William Shakespeare, Shakespeare's Sonnets What is the main or overall theme of this Sonnet?
The main theme of this poem is a rumination of love.