QItemSelectionModel::select does not select item

void BrandPluginViewModel::sayHello()
{
    qDebug() << "Hello! ";
}

void BrandPluginViewModel::init()
{
    // Create selection test model to check if ::select works properly
    QItemSelectionModel* selectionModel = new QItemSelectionModel(m_sourceModel); // m_sourceModel is derived from QAbstractListModel; rowCount is 8 in my case
    QModelIndex modelIndex = m_sourceModel->index(1, 0);
    selectionModel->select(modelIndex, QItemSelectionModel::Select);
    connect(selectionModel, &QItemSelectionModel::selectionChanged, this, &BrandPluginViewModel::sayHello);
    qDebug() << "selectionModel->hasSelection = " << selectionModel->hasSelection(); // prints false
    qDebug() << "selectionModel->isSelected = " << selectionModel->isSelected(modelIndex); // prints false
}