1978
DOI: 10.1007/bf02293865
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On various causes of improper solutions in maximum likelihood factor analysis

Abstract: multivariate analysis, Heywood cases, indefiniteness, interpretability, MALIFA program, sampling, fluctuations,

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Cited by 178 publications
(111 citation statements)
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“…The LISREL program has since been gradually improved (LISREL III: Joreskog & van Thillo 1973;LISREL VII: Joreskog & Sorbom 1987), as regards convenience for the user, additional estimation criteria and model diagnostics. However, one inconvenient side of LISREL, well known to all users, is incurable: LISREL tends to produce improper solutions characterized by negative variance estimates and LV correlations greater than unity (van Driel 1978, Joreskog 1981, Farnell & Bookstein 1982, Rindskopf 1983.…”
Section: Chaptermentioning
confidence: 99%
“…The LISREL program has since been gradually improved (LISREL III: Joreskog & van Thillo 1973;LISREL VII: Joreskog & Sorbom 1987), as regards convenience for the user, additional estimation criteria and model diagnostics. However, one inconvenient side of LISREL, well known to all users, is incurable: LISREL tends to produce improper solutions characterized by negative variance estimates and LV correlations greater than unity (van Driel 1978, Joreskog 1981, Farnell & Bookstein 1982, Rindskopf 1983.…”
Section: Chaptermentioning
confidence: 99%
“…Like the cluster and loading recovery, the unique variance recovery depends most on the amount of information; that is, the MAD uniq has a mean value of .22 for the conditions with 20 data blocks or five observations per data block and .05 for the other conditions. Also, the MAD uniq value is affected by the occurrence of Heywood cases (Van Driel, 1978), a common issue in factor analysis pertaining to "improper" factor solutions with at least one unique variance estimated as being negative or equal to zero. When this occurs during the estimation process, LG restricts it to be equal to a very small number (Vermunt & Magidson, 2013).…”
Section: Goodness Of Unique Variance Recoverymentioning
confidence: 99%
“…Specifically, the mean MAD uniq is equal to .18 for the Heywood cases and .04 for the other cases. In the literature, a Heywood case has been considered a diagnostic of problems such as (empirically) underdetermined factors or insufficient sample size (McDonald & Krane, 1979;Rindskopf, 1984;Van Driel, 1978;Velicer & Fava, 1998).…”
Section: Goodness Of Unique Variance Recoverymentioning
confidence: 99%
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“…Various causes have been identified that may explain the occurrence of a Heywood case, including outliers (Bollen, 1987), model misspecifications (Kolenikov & Bollen, 2012), and sampling fluctuations (van Driel, 1978). Setting negative variances to zero (or close to zero) is sometimes used as a 'remedy' which can be justified when confidence intervals (CIs) of variance parameters include zero.…”
Section: Admissibility Conditions For Parameter Estimationmentioning
confidence: 99%