Should we carry baby up when they cry in the cot?

Hi All, recent research say is good to cuddle baby when they cry and this is the best time to build the close bond with them. Baby will turn to distress if we let them cry till tired and this affect their development. On the other hand, many has rebuked this theory and say baby will have more dependency and they will always know we will carry them always when they cry in the end we will suffer. Any opinion on this ever debating myth? I feel dilemma and my own stand is I don carry but my mother in law differ and will carry once baby cry. Thanks!