Unconditional love means loving a person as God made him/her, irrespective of his/her behavior. For parents it is very important because it is vital for the natural growth & development of children. To understand the concept better, let us understand as to what is conditional love. It is the love provided based upon performance. For example- child is loved if he gets good marks, comes first, or in short meets the parents’ aspirations (which are formed in accordance with their social image).
Unconditional love is known as affection without any limitations, it can also be love without conditions. This term is sometimes associated with other terms such as true altruism, or complete love.(Source-Wiki)
Conditional Love Hampers Growth
Why conditional love affects child’s growth adversely is because the child identifies that he is not loved the way God made him, but is dependent upon performance! Value lies not inside the child, but outside-that is in marks, keeping room clean, & so on. This creates insecurity & the child considers him/her intrinsically inadequate. Temporary adequacy is attained by him/her through desired behavior! This adversely affects self confidence.
Good upbringing should send the message to the child that he is fundamentally okay, the way god made him. This promotes natural growth of self confidence and consequent all round development.