Social skills training is a type of psychotherapy that works to help people improve their social skills so they can become socially competent. SST is predominantly a behavioural therapy but cognitive therapy can also be used in some situations to maximise the success of SST.
Often a faulty toilet ballcock (fill valve) will cause resonance sounds like these. At least it's easy to check -- here's how to tell if this is the cause. Close the supply valves to all the toilets. If the noise disappears, open them one-by-one till the noise starts again. Replace the ballcock in that toilet.
1 If the bowl flushes normally then there is no blockage down the trap, sewer pipe or vent pipe that is effecting normal flushing. 2  If it swirls but does not flush or has a weakflush then the clog is in the trap, drain pipe or vent pipe. 3  Try a plunger to clear the toilet first.