5.C Developing Ideas Through Cause and Effect (REO-1.J)

A causal chain works like dominoes: A leads to B, B leads to C. For the chain to hold, each link has to actually push the next one over, not just happen before it. Readers fall for weak chains fast because narrative order feels like proof. If a writer says 'wages rose, rents rose, people left,' the sentence order mimics a chain of causes, but it has only shown a sequence. To upgrade sequence into cause, the writer needs a mechanism: rents outpaced wages, so the cost of staying exceeded what people could afford, so they left. Without that mechanism stated, the reader is asked to supply the missing logic for free.

Not every effect needs a single chain. Sometimes a writer gathers several independent causes that all converge on one outcome, like spokes meeting at a hub instead of dominoes in a row. A paragraph explaining a drop in traffic deaths might cite redesigned intersections, lower speed limits, better trauma care, and safer vehicles, all contributing without any claim about which mattered most. That is a legitimate structure, but it comes with a cost: it cannot then turn around and credit one cause alone, because the paragraph's own logic was convergence, not ranking.

This method sits next to comparison and classification among the ways writers organize reasoning, and it is easy to confuse with mere correlation. Two trends rising together, like broadband access and reported loneliness, show no direction and ignore every other force moving at the same time. Strong causal writing names the mechanism linking cause to effect, not just the timeline.