Intense velocity shears that are unresolved within the scattering volume can distort incoherent scatter spectra in ways that could be confused with the effects of non-Maxwellian plasmas or ion hot spots. These spectra lose the usual double humped characteristic of the more familiar incoherent scatter spectral shapes, and standard analysis (ignoring velocity shears) of such spectra yields severe under estimates of the electron temperature and over estimates of the ion temperature, with an implied, but erroneous, result that Tei. High resolution velocity measurements from the HILAT satellite demonstrate that such strong shears do exist at high latitudes. ¿ American Geophysical Union 1988