That means that an increase of net exports of $100 million leads to an increase in real GDP of $1 billion. Again, this is the multiplier effect at work in the economy. When you think about it, the MPC and the MPS are the key to this formula. When they change, the multiplier effect changes. Since the simple spending multiplier is based on the marginal propensity to consume, any increase in the MPC will increase the value of the multiplier. Likewise, any decrease in the MPS will increase the value of the multiplier.
There are physical causes of shaking, but these tend to be less common. Only a doctor can confirm that you are feeling shaky because of anxiety and not because of some health problem. Also, during periods of stress, the body may deplete important resources, like water or magnesium.
There are several factors that may contribute to the sensation of light headedness. While these factors are further affected by age, lifestyle patterns, gender, etc, some of the common causes of light headedness include the following. 1  Hunger is one of the most common causes of light headedness.